I have installed unity 2021.3.1f1 as required on the modding tools but when I launch the project it is saying my Unity is not the correct version, so I have tried using many different versions and the mod tools won't accept it unless it is 2021.3.1f1 which causes an error with the version inside the project.

Please go to Discord and ask, no one here can help you

Hey,

Thanks for the report. We just released an update to the mod tools. We think this should fix the issue, but please let us know if the problem persists.