- Joined
- Apr 16, 2010
- Messages
- 492
- Reaction score
- 102

That's a http 403 error received from the PBX MyPhone server.
Maybe he started to use a VPN (see below).
If not, he could try to re-scan the QR code.
See also https://www.3cx.com/community/threads/3cx-ios-app-nordvpn.137568/
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.