does it mean tailscale comes with custom certificates? if this certificates are not a common public CA you might need to import this certificates into the AiO container
this is outdated value see Important changes regarding COOL/CODE docker versions from v21.11.3.6 on (multiple domains setup)
you screenshot shows https://0.0.0.0:9980 as /hosting/discovery output which is wrong and can’t work at all - please review if this URL reflects the real public server hostname.