Seamless Co-Op Question

Hi everyone!

I played the whole game + DLC on seamless co-op last year and it was amazing. Once me and my friend finished the game, we moved on to other titles. Today, when I tired to launch the game, it said there is a new version of the mod available.

I would just update the mod and go on, but there has been a lot of talk about the mod being unsafe. While I personally found no serious evidence of this accusation, the number of complaints I read about was concerning.

Can anyone here clarify if the mod is still safe to use or if I should be aware of anything else?

Thanks in advance :D