I am a player in Minecraft, I used your mod and another mod that needs your mod. I encountered a problem when using the mod, that is, I found that I cannot equip the ring. Why is this?

This is my mod list

This is my situation in the game

Additional Infomation:
Forge Version: 36.2.19
Minecraft Version: 1.16.5
System: Archlinux
Launcher: Multimc5

The ring is normally an unobtainable item and does not have an associated slot enabled by default. It seems none of the mods you added add a ring slot, so you'll need to either just live with it or edit the configs as described here in order to add your own ring slot.