AutoRemote invalid URL and Device registration not possible

Good afternoon to all,
unfortunately I'm fighting with autoremote from Yesterday!
I hope that someone can halp my in this beautiful forum!
I explain my situation.
I've tested the free app for some days without any problem.
The massage from the two registered devides works well.
After some days of test I buy the full version from the play store and from that moment the problem appear.

I have two different url for each devices, but when I try to send the url (registration procedure) I receive the notification/pop-up that the url is invalid.
"TITLE - Invalid URL
This is not a valid AutoRemote URL. Please check the URL on the other device again"
The same is on the other device if I try to use the other URL.
Moreover the QR code is not present on each app.

I have already tried to disinstall autoremote,google play services, replace the factory setup but nothing!
I've lost this week-end on this problem, maybe the solution is easy by I don't know...
If necessary I can upload some screenshot.

Thanks in advance for your support.
ANDREA
P.s. Sorry for my english!

 

Hello Joao,
yes before the installation of complete version I've uninstalled the free app version.
At the moment the problem is still present!
Do you have any idea about the missing QRCODE?
Thanks for your support and sorry for the late reply.

ANDREA