it doesn't work from the post listing, but if you go to the post directly the option should show up
Try using the Photon front end. For adding and removing mods, it is more flexible than the standard lemmy-ui front end.
If the option isn't appearing [on going to the post], it likely means the user created the community. In that case you could try DMing them and sorting out the matter if they're still active or, in the event they're not, contacting the admins and I think they may be able to handle it.
Edited for clarity due to skipping steps.
Wait....you're saying that your best options are contacting the user, or the admins???
I always was taught that the answer to the question "Who ya gonna call?" Is ALWAYS "Ghostbusters!"
If you haven't resolved this DM me the name of the mod you'd like to remove.
Lemmy.world Support
Lemmy.world Support
Welcome to the official Lemmy.world Support community! Post your issues or questions about Lemmy.world here.
This community is for issues related to the Lemmy World instance only. For Lemmy software requests or bug reports, please go to the Lemmy github page.
This community is subject to the rules defined here for lemmy.world.
You can also DM https://lemmy.world/u/lwreport or email report@lemmy.world (PGP Supported) if you need to reach our directly to the admin team.