Is it disconnecting as soon as the screen goes off? That's already known. I have a fix for it but not yet in the published versions (see viewtopic.php?f=32&t=170
). Must be some issue with power management.
The second point is "by design". The phone cannot access the SIM card while rSAP is active, so no mobile data connection is possible. Newer Volkswagen/Skoda phones offer a Bluetooth modem (DUN profile) that could be used by the phone to access the internet. But I could not yet manage to get that working on the phone. Perhaps there is some Linux hacker out there who can make it work...?