WathcGuard Mobile VPN is looping on Push Request
WatchGuard Mobile VPN with SSL 12.7.
Firebox model in the office 35T.
VPN users are authenticated against Active Directory
2-step verification is set up in AuthPoint
A user tries to connect VPN but after approving AuthPoint push request the process starts to loop and another push request is sent.
Eventually the process of connection gets stuck either at "Successful ARP Flush on interface" or "Assigning Virtual IP address".
Tried to reinstall VPN client - didn't help.
The issue is user-specific as other users are not affected.
Could you please advise what else worth to try.