Am not able to join anyone without turning their phone off or kicking them off and I find this to be rude and I would like if the problem is solved as soon as possible

Every time I join someone who we share the same Google Account so when we join each other his phone turns off or kicks him off while he can join other but when playing with me it cashes, I bought the app in my phone and every time I join someone it turns their phones off which take away the fun.