SSL checks on custom port

Hi

I have uptime monitor for here (this is a minio server)

it works fine.

I want to have a SSL monitor to make sure the certificate is valid; when I try to setup SSL check ---it fails.

If I change port to 443 then it works fine (I haven't checked 8443) - but I cannot do that permanently and would like SSL checking to work on custom ports.

Can you help fix.