try to visit your site via incognito mode (ctrl+shift+n in chrome) or via your mobile. it's most likely a problem with your browser.
I will try that when I am at home. On my college my sites and all work fine. But at home I need to use a Tor Browser otherwise it keeps loading.
The Tor Browser gives me a new IP, so I think my IP is blacklisted by accident, but I don't know how to get it from the blacklist...?
Or am I wrong and there is something else what is causing this trouble?
Edit: Problem solved, my ip was banned because I enetered login details a few times wrong. Very helpful support!