After clicking "Link FAS account" which leads to https://packager-dashboard.fedoraproject.org/api/v1/oidc_login?redirect=https://packager-dashboard.fedoraproject.org/ I get
400 - Bad Request Invalid redirect_uri
on page https://id.fedoraproject.org/openidc/Authorization?client_id=oraculum&redirect_uri=http%3A%2F%2Fpackager-dashboard.fedoraproject.org%2Foidc_callback&scope=openid+email+profile+https%3A%2F%2Fid.fedoraproject.org%2Fscope%2Fgroups&access_type=offline&response_type=code&state=
This seems to be fixed now, closing. If this problem appears again, please reopen.
Metadata Update from @lbrabec: - Issue status updated to: Closed (was: Open)
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/apps/packager_dashboard/issues/148
Please continue any further discussion there.