Hi where do you have your TM's if in same GU Origanzition thae they can see the tm's
if you crate one GU Origanzition and put your users into this you can then say thet thera are no TM's and also don't have the TMS in root GU organization. If you need help whit this just send mi a private massage.
For GU projects said that asigned usere have External Transltion role. and use phase in sdl studio.