I go into SSLVPN Global settings, make changes, and hit save, then OK. But none of the changes are saved. How can we make changes to this? Tried in Chrome, Edge, and Firefox.
Does SSLVPN work for you? Or could be related to: https://community.sophos.com/sophos-xg-firewall/f/recommended-reads/119348/sophos-xg-firewall-troubleshooting-0-byte-ssl-vpn-file
I cannot download the config from it either to test the VPN.
Then follow the KB.
Rebuilding the CA with all the required fields for the device did the trick. There was not a Custom CA, but the "Default" CA was empty of all its fields. Not sure how that would get generated initially without the fields, so that could be a v19 bug.
Check your MySophos Portal. Do you have special characters there (like Towns or street namens)?