Ok after two days of messing with both the in game mod manager; which I found out will not allow you to use 3rd party mods and BG 3 Mod Manager which is nothing but a thrown together mess that I can't even get to load the game even though it is installed on the same drive as BG3 it will not load the game. I get a white screen for a few seconds then back to the mod manager.
Now I am going to go and re-install Vortex and see if I can't play and mod the game that way. If not I guess I'll have to do another clean install; will be my 3rd clean install; and shelf the game until you figure things out. After all I've tried everything I could think of and then some to try and get things to work but to no avail.