Privacy settings

I’ve connected my cellphone with my speakingcomputer with teamviewer. I use a speakingcomputer because i can’t talk. Teamviewer makes it possible to control my life the way i want it. Now i’m having problems with opening my banking app. When i open the app on my cellphone, teamviewer shows a black screen on my speakingcomputer instead the banking app.

How can i solve this problem?