Had a look around, and it seems like you’re reporting about Survival’s Trials, if I’m not mistaken? Yeah, Survival recently went through a reset, so its Trials will most likely be buggy. I’ve reported it, and hopefully it gets fixed soon! :)
If you just want to get your Trials fix, Skyblock’s Trials is also open and working, as with Olympus and Asgard Trials (though you need Warrior Rank I think, I might’ve forgotten)