If your MAC# is correct on your donation page, and you have entered the Server URL address correctly, You may just have to perform a reset "properly".
Double check your settings.
Shutdown and unplug the unit (powering off does not actually shut these units down. everything in memory is still active).
Go to your Donation page and do an IPTV Reset. Wait 2 minutes.
Plug in the STB.
Make sure your internet connection is good.
Launch LiveTV.
If you still don't have success, contact Papiao at the link below, and include as much info as possible.
Code:
https://papiao.is/contact/
/kens