BeamMp not open

im open client and nothing happens

A new version has been released: Release BeamMP v4.9.7 - BeamNG v0.31 | Bug fixes, New Features & BeamNG v0.31 Support · BeamMP/BeamMP · GitHub
Open BeamMP and it should automatically update to the latest version.

In beamng the multiplayer icon now appears, but the beamMP client still doesn’t open, I’ve tried reinstalling it several times and also beamNG
There’s no way to even attach a printout of what’s happening because nothing happens.
What else can we try?

Not too sure what you mean by this, but you just need to run the beammp launcher, it will then automatically open beamng with the mp mod enabled.