I put this on my server and in my mods, and when I try to join the server it shows an incompatibility. It says I need version 1.20 of minecraft to play on it due to the Vanilla plus Tools mod

It works fine with 1.20.1 - am using it at the moment! vanillaplustools-1.20-1.0.jar in 1.20.1

That is the one I downloaded, strange

We also use it on a 1.20.1 server and it works just fine for us. Can you show us your log when this happens?

I reinstalled the mod locally and on the server and it works like normal now. I am not sure what happened