Unable to connect to internet

I have tried everything I can think of to get PDF Architect to work on my computer but it continually says it's unable to connect to internet. I can log into my account but when I try to enable the merge function is gives me this error.
HELP!

Hi Revilo,

Do you think PDF Architect tries to download a missing module, but is unable to do so?

Kind regards
Sascha

Hi Sascha,
That is exactly what it acts like.
I go into Create/Merge files. Then it asks for a login which I type in but doesn't work although I can login to that account on the site.

It then replys with the error that no internet connection exists, yet it does.
Any help would be appreciated. I've also tried using the Microsoft account login with the same effect in the app. Again it works online though??
This is so frustrating!
Keith