Teamviewer Meeting - Black screen + Iphone/ipad support

Hi.

1. We currently have 1 license for Our company for Teamviewer 13. Started a meeting with password to show an inhouse software. We noticed that when we connected to the meeting the screen went black several times in a short times. Our application is using alot of memory. Is there any optimization that can be done in teamviewer?

2. Previously there was application on Iphone/ipad/Android, Teamviewer for meetings that could be used to attend meetings, i noticed these are gone on Apple store and the one in android is from 2014, has the development stopped? Is Blizz able to connect to teamviewer meetings?