Relic quest bug

[Jeeqbit]

The next quest is Up in Arms from Gerolt, who sends you to Jalzahn. You are asked to obtain atma.

https://ffxiv.consolegameswiki.com/wiki/Up_in_Arms

Make sure you equip the weapon first.

After speaking with Jalzahn, the quest completes and no longer appears but you still need to collect the atma. After you have collected the atma you can return to Jalzahn with the weapon unequipped.

It's common for people to be confused because the quest completes and the next step is done without a quest at all, but you should be able to farm fates right now.