Unfortunately, the mod does not work. I have now tried everything imaginable.

Minecraft Version: 1.21.1
Mod versions: 2.2.0 and 2.1.0
Fabric API

I have tried it in the server mod folder, only in the client mod folder and in both folders.

Both in singleplayer and multiplayer.

And I have tested if it is due to other mods. But even if I turn off all other mods, it does not work.

There are also no error messages in the logs that I could refer to.

And even Chat GBT is now at a loss.

All that remains is to ask the manufacturer of the mod. Do you have a solution for this?

I just booted up a fresh install on 1.21.1

BTM 2.2.0
Fabric API 0.114.0+1.21.1
Fabric 0.16.10

And was able to use the mod on both singleplayer and multiplayer.

Are you really not using any other mods? Can you take a video or something like that?