diff --git a/doc/ConfigToken.md b/doc/ConfigToken.md
index 39a476b..3a7a94e 100644
--- a/doc/ConfigToken.md
+++ b/doc/ConfigToken.md
@@ -232,6 +232,29 @@ Mär 21 12:22:10 debian-grid-test systemd[1]: nvidia-gridd.service: Main process
 Mär 21 12:22:10 debian-grid-test systemd[1]: nvidia-gridd.service: Failed with result 'exit-code'.
 ``` 
 
+What is interesting, that `caChain` and `publicCert` on original dls response, contains 76 chars per line,
+where our (default pem) only contains 64 chars.
+
+But even after splitting into 76 char-chunks
+
+```
+{"certificateConfiguration": {"caChain": ["-----BEGIN CERTIFICATE-----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\r\nLB1AoLT312tgy6B/HKzBPeCdFpQ0qOI=\r\n-----END CERTIFICATE-----"], "publicCert": "-----BEGIN CERTIFICATE-----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\r\n-----END CERTIFICATE-----", "publicKey": {"exp": 65537, "mod": ["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"]}}, "configToken": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJOTFMgU2VydmljZSBJbnN0YW5jZSIsImF1ZCI6Ik5MUyBMaWNlbnNlZCBDbGllbnQiLCJpYXQiOjE3NDI1NjMyMjYsIm5iZiI6MTc0MjU2MzIyNiwiZXhwIjoyMTIxMjU0NDI2LCJwcm90b2NvbF92ZXJzaW9uIjoiMi4wIiwiZF9uYW1lIjoiRExTIiwic2VydmljZV9pbnN0YW5jZV9yZWYiOiI0ZTUzYTE3MS0xMDNiLTQ5NDYtOWVkOC01ZjRjMGVlNzUwZDkiLCJzZXJ2aWNlX2luc3RhbmNlX3B1YmxpY19rZXlfY29uZmlndXJhdGlvbiI6eyJzZXJ2aWNlX2luc3RhbmNlX3B1YmxpY19rZXlfbWUiOnsibW9kIjoiYWM3YmM5YWQyNDZjZmU4MjUyZGEwZjM4OTNmOTRhZDUwOWZhMDgzMjc3NTI1Yzc3MWEwMjVkODFiOTk4NDYxOTAwZGUxMzAxMTA1NzY0ZDg4NmMzOWNjMThiZGYxYzI0YjA3ZDNhZGIxNWY3ZTZkMjEzZDBlNDA1ZDM2NzhhMmE5MDc1MzUxNDE3NzFmNGFmYzkwOWIyYWNhNWY4OWM2NmNmMDAxNDhjODEwOWZlYzA4NDE1ZmJiNzU5ZTI2ZmZhZjQ4YTZjYWE1ZjFiNmJjZmZlNjJhN2NmYjkwZmFiMmNmNmQ0MjY4M2YzODBkNTI1ZmQ3ODgwODk3ZDMwNmE4MmY3M2FhZmU5YzM4ZmNmZGJiNDJiNmRiM2VjMDM0NWYwYjE2NGJhZmZkNWIzODNjMzE3MmZmYjA3OTllYjVhNzhkNWMzODFkNGQ0MTNjMDhlNzM0NWY3YmNiMDE5NmU5ZGUxNjQ4NzkzNWUyMzQwMDE5N2RjYjljY2I3YjY5ODM3NjAwMGI1N2M3NDBmNjY1NTYxMzBiNzdmNTQ3NGI5ZTM5YWE5YzExZjUzYjYzMGZlNmM4MTk1MDRkODlmYzdlMTk2NTM2MDdiNThjYzhiNDgyOGI2MTcwYjM5MmMwYzA3NTk5N2U3MjIwZjY2N2Y4NTMwODVhYzM3ODJiNzEzYTUiLCJleHAiOjY1NTM3fSwic2VydmljZV9pbnN0YW5jZV9wdWJsaWNfa2V5X3BlbSI6Ii0tLS0tQkVHSU4gUFVCTElDIEtFWS0tLS0tXG5NSUlCSWpBTkJna3Foa2lHOXcwQkFRRUZBQU9DQVE4QU1JSUJDZ0tDQVFFQXJIdkpyU1JzL29KUzJnODRrL2xLXG4xUW42Q0RKM1VseDNHZ0pkZ2JtWVJoa0EzaE1CRUZkazJJYkRuTUdMM3h3a3NIMDYyeFgzNXRJVDBPUUYwMmVLXG5LcEIxTlJRWGNmU3Z5UW15cktYNG5HYlBBQlNNZ1FuK3dJUVYrN2RaNG0vNjlJcHNxbDhiYTgvK1lxZlB1UStyXG5MUGJVSm9QemdOVWwvWGlBaVgwd2FvTDNPcS9wdzQvUDI3UXJiYlBzQTBYd3NXUzYvOVd6ZzhNWEwvc0htZXRhXG5lTlhEZ2RUVUU4Q09jMFgzdkxBWmJwM2haSWVUWGlOQUFaZmN1Y3kzdHBnM1lBQzFmSFFQWmxWaE1MZC9WSFM1XG40NXFwd1I5VHRqRCtiSUdWQk5pZngrR1dVMkI3V015TFNDaTJGd3M1TEF3SFdaZm5JZzltZjRVd2hhdzNncmNUXG5wUUlEQVFBQlxuLS0tLS1FTkQgUFVCTElDIEtFWS0tLS0tIiwia2V5X3JldGVudGlvbl9tb2RlIjoiTEFURVNUX09OTFkifX0.db4MVvs7kUt6i4ffEok2doqXGUE_9vicssjxwfGA71VyI9OEnvJ7lJ60E6h_ScNEEYwAs_Ghy4OyK_Wk-yt_vh80sbyn5Vd-CKY1A4UgFmG20k2mFKUOpr7hmkfhxkCURUnC0auYwi9OEsNDOi8L05HmQjYbdtOBUH1VlaGVP2oPeeLX7PFPcvARP-Jhm6WppZ321zYC-M39OovdFtJIgVTMA5cJtFvfeHVzCXoo5ybmjtXPbS4ZN_5M3ua8osMEQgIlxsJSdYcD9wDNIiWSPKJuXJKKWtpBzG09FuN4ew7pU-jQ6Rcd6NIS3l7Fv68ooQSjHi4Bu7UAn4YXdXx14Q"}
+```
+
+it results in the same error messages
+
+```
+Mär 21 14:21:43 debian-grid-test nvidia-gridd[503]: NLS initialized
+Mär 21 14:21:43 debian-grid-test nvidia-gridd[503]: Failed to verify public certificate (error:0A000126:SSL routines::unexpected eof while reading)
+Mär 21 14:21:43 debian-grid-test nvidia-gridd[503]: Failed to verify public certificate (error:00000000:lib(0)::reason(0))
+Mär 21 14:21:43 debian-grid-test nvidia-gridd[503]: Failed to validate public certificates
+Mär 21 14:21:43 debian-grid-test nvidia-gridd[503]: Server configuration validation failed. Invalid certificate received from server.
+Mär 21 14:21:43 debian-grid-test nvidia-gridd[503]: Failed to setup cloud License Manager: 3
+Mär 21 14:21:43 debian-grid-test nvidia-gridd[503]: Shutdown (503)
+Mär 21 14:21:43 debian-grid-test systemd[1]: nvidia-gridd.service: Main process exited, code=exited, status=1/FAILURE
+Mär 21 14:21:43 debian-grid-test systemd[1]: nvidia-gridd.service: Failed with result 'exit-code'.
+```
+
 # Sources
 
 - https://8gwifi.org/PemParserFunctions.jsp
\ No newline at end of file
diff --git a/src/test/test_config_token.py b/src/test/test_config_token.py
index 26bed89..c7ba1f8 100644
--- a/src/test/test_config_token.py
+++ b/src/test/test_config_token.py
@@ -1,7 +1,7 @@
 import json
 from calendar import timegm
 from datetime import datetime, UTC, timedelta
-
+from textwrap import wrap
 from cryptography import x509
 from cryptography.hazmat._oid import NameOID
 from cryptography.hazmat.primitives import serialization, hashes
@@ -376,7 +376,7 @@ def test_our_config_token_with_our_key():
         .add_extension(x509.SubjectAlternativeName([
             x509.DNSName('4e53a171-103b-4946-9ed8-5f4c0ee750d9')
         ]), critical=False)
-        .sign(my_si_private_key, hashes.SHA256()))
+        .sign(my_ca_private_key, hashes.SHA256()))
 
     my_si_public_key_exp = my_si_certificate.public_key().public_numbers().e
     my_si_public_key_mod = f'{my_si_certificate.public_key().public_numbers().n:x}'  # hex value without "0x" prefix
@@ -403,6 +403,7 @@ def test_our_config_token_with_our_key():
                 "mod": hex(my_si_public_key.public_numbers().n)[2:],
                 "exp": int(my_si_public_key.public_numbers().e),
             },
+            # 64 chars per line (pem default)
             "service_instance_public_key_pem": my_si_public_key_as_pem.decode('utf-8').strip(),
             "key_retention_mode": "LATEST_ONLY"
         },
@@ -411,10 +412,29 @@ def test_our_config_token_with_our_key():
     my_sign_key = jwk.construct(my_si_private_key_as_pem.decode('utf-8'), algorithm=ALGORITHMS.RS256)
     my_config_token = jws.sign(payload, key=my_sign_key, headers=None, algorithm=ALGORITHMS.RS256)
 
+    # generate a 76 char wide pem (does not work either, so this code can be removed)
+    response_ca_chain = my_ca_certificate.public_bytes(encoding=Encoding.PEM).decode('utf-8')
+    response_ca_chain = response_ca_chain.replace('-----BEGIN CERTIFICATE-----', '')
+    response_ca_chain = response_ca_chain.replace('-----END CERTIFICATE-----', '')
+    response_ca_chain = response_ca_chain.replace('\n', '')
+    response_ca_chain = wrap(response_ca_chain, 76)
+    response_ca_chain = '\r\n'.join(response_ca_chain)
+    response_ca_chain = f'-----BEGIN CERTIFICATE-----\r\n{response_ca_chain}\r\n-----END CERTIFICATE-----'
+
+    response_si_certificate = my_si_certificate.public_bytes(encoding=Encoding.PEM).decode('utf-8')
+    response_si_certificate = response_si_certificate.replace('-----BEGIN CERTIFICATE-----', '')
+    response_si_certificate = response_si_certificate.replace('-----END CERTIFICATE-----', '')
+    response_si_certificate = response_si_certificate.replace('\n', '')
+    response_si_certificate = wrap(response_si_certificate, 76)
+    response_si_certificate = '\r\n'.join(response_si_certificate)
+    response_si_certificate = f'-----BEGIN CERTIFICATE-----\r\n{response_si_certificate}\r\n-----END CERTIFICATE-----'
+
     response = {
         "certificateConfiguration": {
-            "caChain": [my_ca_certificate.public_bytes(encoding=Encoding.PEM).decode('utf-8').strip().replace('\n','\r\n')],
-            "publicCert": my_si_certificate.public_bytes(encoding=Encoding.PEM).decode('utf-8').strip().replace('\n','\r\n'),
+            # 76 chars per line
+            "caChain": [response_ca_chain],
+            # 76 chars per line
+            "publicCert": response_si_certificate,
             "publicKey": {
                 "exp": int(my_si_certificate.public_key().public_numbers().e),
                 "mod": [hex(my_si_certificate.public_key().public_numbers().n)[2:]],