Of course, we are always here to help you.
Some questions, things to check...
1) from clish, can you run -> show web ssl-port
2) what does portal tab show when you edit cluster object in smart console?
3) When you try log into Gaia, what is the message?
4) Did you try change the port and test?
Happy to do remote and check, if you are allowed to.
MAKE SURE fw is not running initial policy or default filter, which would block everything (default filter one that is, initial would allow ssh and web UI, but ONLY port 443). Just run fw stat command from expert mode.
Alternatively, you can try below from clish.
set web daemon-enable off
save config
set web daemon-enable on
save config
Then test again.
Andy