This is not necessarily something to be scared of. TLD in this case means “patriots.win”

Certificates are issued by a service that has access to both the root file path of the site, and the web. The service places a file with an authentication key in the file system of the website, and then checks to see if it can access it though the TLD, in this case, patriots.win. Certs prove that the site is served from where it claims to be served.

You are perfectly safe here so long as you don’t enter any information. I’d be cautious about passwords - wait a couple days to see what happens, or use a temporary (new) throwaway account.