Hello Dark Force,
Welcome as a new member!
If you can still logon locally to the console of the server then I would suggest to go on the local console to : https://localhost:2381/ and login there with a local user account with administrator/root rights. All those accounts should allow easily logon and from there you can then define anonymous access (ready only) or even define different user groups that would get access to the Administrator or Operator level of the SMH.
Would this help?
Cheers, Jeroen