cannot open any file

i only can see one site

i cannnot page through

update:

The programm is still not running on my laptop. but i tried to install it on my pc. every thing works fine.

tried several times to deinstall the programm and reinstall with different methods

and delete the authorisation

still the proramm is not functioning: i cannot open any file . i only see one page of any document.

terrible software!

Can somemone help me, please?