Thanks so much, this was my issue too. I had Unifi's own Adblock enabled which was blocking ca.unraid.net. I added ca.unraid.net to the Adblock's Allowlist. Thanks, this was my issue too. I am using my UDM's own Adblock ruleset and it was blocking ca.unraid.net. I added it to the Adblock's Allowlist and it worked again.