I currently play on Minecraft version 1.16.3, and I installed the mod but it doesn't work. in the game it appears that it is correctly installed but it does not work in the game :(

Closing - no response.

I need more information than this. Please provide the version of Forge and the version of the mod so I can better determine why it isn't working.

Mine seems to not show up.
Mod version: 6.0.0.8
Minecraft Version: 1.16.3
Forge Version: 34.0.7
Please let me know if there is anything else you need. I would love to see jei/nei in 1.1.6.3

Did you enable the tooltips in the config file @MarkelL12