It seems, there is an issue from 2.1.0.111 onwards with the āDUPLICATI__WEBSERVICE_PASSWORDā in docker.
EDIT:
Unfortunately, I cannot find any valuable logfile. journalctl shows only the start entries from podman and there I donāt see any differences between the versions.
I think I missed this part in my previous response. I think this is on the ngclient UI? (The one with a D icon top-left).
If so, I can reproduce this only if the name is empty. If you do have a name, try editing it and see if the button lights up. If not, you can also click the navigation dots above to jump to the page you want.
If it still fails, you can click āRevert to NGAX clientā in the menu on the left to get the previous UI. But I would like to fix the issue. Do you have additional details on this?
Open hostname:8200, get known issue of blank screen
Change URL to ngax
GUI prompts for password
Enter correct password
GUI reverts to ngclient
Having switched the URL to ngax and having gone through the password dialog, I would expect the GUI to stay with ngax rather than reverting to ngclient.