Have 3 independent servers (America, Europe, Asia) confirm if your website is really down.
is https://www.website-down.com/https%3A%2F%2Fwww.website-down.com%2Fhttps%253A%252F%252Fwww.website-down.com%252Fhttp%25253A%25252F%25252Fme-solshare.owncube.com%25252F working?
https://www.website-down.com/https%3A%2F%2Fwww.website-down.com%2Fhttps%253A%252F%252Fwww.website-down.com%252Fhttp%25253A%25252F%25252Fme-solshare.owncube.com%25252FYOUR WEBSITE IS DOWN
is https://www.website-down.com/https%3A%2F%2Fwww.website-down.com%2Fhttps%253A%252F%252Fwww.website-down.com%252Fhttp%25253A%25252F%25252Fme-solshare.owncube.com%25252F working?