Azure virtual firewall appliance backups

Hi, I have a Sophos firewall appliance (SFV2C4) hosted virtually in Azure. I have been trying to get the backups of the VM working but it continues to fail. I found this thread from 3 years ago that...
Device Registration fails: Appliance connectivity issue with the license server - Time not set

I tried to register a RMA firewall with SFOS 21 EAP after it has been claimed in Central. It did not work. Either Administration -> "Registration" failed also Sophos Central -> "Sophos Central registration...
How to add Aure AD to Sophos Firewall

Dear all, I would like to get to support from all of you show me guide how to add the AD Azure to the Sophos Firewall Best regards, Viet Ton
How to change the Device Registration Details on my firewall?

Hi, How can I change the Device Registration Details ? Is possible to change the details, after I have done registration? Thank you.
How to get back the Sophos Firewall Home Console?

Hi, I re-sintalled SFOS on my PC. But after I have finished installing. The firewall black and white console has changed. Reboot the PC, did not solve the problem. What is the problem?