The home page mentions contacting @RossC0, who hasn't been active on MongoEngine for 6 years.

To contribute to the project contact me @RossC0 ...

This sentence should be removed, or rephrase the paragraph to redirect users to the current best resource (is it GitHub issues and the mailing list?).

Also, the home page mentions a IRC channel that is empty nowadays, so it's probably best to get rid of that mention also:

... or by chatting with other users on the #mongoengine IRC channel.