Enrollment server not verified

Hi
We are setting up a RAS POC with SAML authentication.
We are struggeling with the enrollment server, which refuses to verify.
We hav opened TCP/UDP 30030 inbound to the enrollment server, still no luck.
We see this errors in enrollserver log:

[I 6D/00000001/T1720/P0FC4] 17-06-25 10:40:29 - Starting Enrollment Service 20.2.0 (build 25893)
[I 6D/0000000C/T1720/P0FC4] 17-06-25 10:40:29 - Starting Agent 20.2 (build 25893) Unicode
[E 6D/0000001E/T1720/P0FC4] 17-06-25 10:40:29 - Failed to read CertID value from HKLM\SOFTWARE\WOW6432Node\Parallels\EnrollServer. (The system cannot find the file specified. [0x00000002])
[I 6D/00000126/T1720/P0FC4] 17-06-25 10:40:30 - Created machine identifier 00F09AFA-E6B2-4EC5-89D2-1DC2ADFB63C2.
[E 6D/00000003/T15F8/P0FC4] 17-06-25 10:40:30 - Failed to connect to any PA.
[E 6D/00000003/T17D0/P0FC4] 17-06-25 10:40:36 - Failed to connect to any PA.
[E 6D/00000003/T01B8/P0FC4] 17-06-25 10:40:42 - Failed to connect to any PA.
[E 6D/00000003/T0E9C/P0FC4] 17-06-25 10:40:48 - Failed to connect to any PA.
[E 6D/00000003/T0774/P0FC4] 17-06-25 10:40:54 - Failed to connect to any PA.
[E 6D/00000003/T0CB0/P0FC4] 17-06-25 10:41:00 - Failed to connect to any PA.
[E 6D/00000003/T1F54/P0FC4] 17-06-25 10:41:06 - Failed to connect to any PA.
[E 6D/00000003/T0EC4/P0FC4] 17-06-25 10:41:12 - Failed to connect to any PA.
[E 6D/00000003/T038C/P0FC4] 17-06-25 10:41:18 - Failed to connect to any PA.
[E 6D/00000003/T1554/P0FC4] 17-06-25 10:41:24 - Failed to connect to any PA.
[W 00/0000012C/T1DF8/P0FC4] 17-06-25 10:41:30 - Failed to query interface ICertRequest2. Error 0x80040154
[E 6D/00000010/T1DF8/P0FC4] 17-06-25 10:41:30 - Failed to send ENROLLSERVER_CMD_ENABLE

Any tips?