BeamMP won't open up

It will pop up the black box but it says" [FATAL] Invalid answer from authentication servers please try again" this is v1.80.5. I’ve uninstalled and reinstalled and also deleted it from my computer and reinstalled, and done the same thing for BeamNG. I can still install other types of mods. It has to be between BeamNG and beamMP because BeamNG works perfectly fine. Also have reinstalled windows. So pretty much I’ve gone through the basic steps like going to file explorer and trying to fix it there but don’t rill know what to do. help pls thanxs.