For thouse who tryed to help me with accessibility issues in this network: I found a solution, that works fine so far. Thanks to @Tistelfliege. The app Amaroq for IOS is very helpfull. There also are things, that should be improved, but it works fine so far for now. So no I should be ready for other toppics to share with You. Thanks to everyone for help and support.
@TQ Thanks so much. I know, that it must hav been hard for You to only hear about my problems using this here, but I needed to find a way to start somehow. And after a short meal and a bear, I will be ready for more. ;-)
@balouqlc it's great you've got that sorted out!