Hello,
today we upgraded our ORDS to version 23.1.0.r0861423 and when I now try to access SDW via the URL https://domain/ords/pda/_sdw
it opens the Sign-in page. After typing in my user credentials I get the “Failed to fetch” message or “An invalid user name or password was supplied” if I change the language with the dropdown in the right top corner.
It also appears that a popup window appears if I open this page:

And a few times the URL was changed to https://domain/ords/pda/sign-in/?r=_sdw%2F
without successful login.
The same user with the same credentials is working fine in App Builder and can login to APEX applications. During my tests it happens 2 or 3 times that a login with the same credentials was successful. But now it's not working.
Any idea?