I can’t access my random dungeons because it is stuck on claim rewards… please help
If you’re deliberately avoiding collecting the Battle Pass points from having done random dungeons (e.g. to carry them over into the next week) you can still access the Random Dungeon Finder…
Menu > Party Finder
Random Dungeon > Quick Matching
This takes you to the same screen you’d normally get from the Codex button…
Unless you mean that you are unable to claim your rewards using the Codex button, this is not a bug.