@TPint You can also check your Telephony menu settings - Chapter 6.3 from the VR2800v user guide and edit your telephone number according to your needs. In any case, I would contact the landline...

@Hezqeel When you use an easymesh the guest and IoT network would not be extended through the extenders - these two SSIDs would be on the main router only.

@TPint It seems like this is because of your mobile service provider or the landline (PSTN) provider - contact them to be sure.

@summoned In your case, perhaps a different approach like the one described here, would be a possible workaround.

@summoned Probably the culprit here is with the VPS settings. In general, if you want to expose an FTP server behind your AX20 to the Internet, here's a guide on that.

@Daarnu Apparently (from an old thread) there's no solution existing but you can turn off Malicious content filtering as a workaround.