Realm not loading

I haven't been able to log on to my minecraft realms server since 2 hours ago. It doens't list a specific bug. I left the world because there was going to be server maintence. Ever since have tried all the listed tips & tricks list but still can not reach the server.

The only thing I get , is a really long waiting screen which leads to an error.

For more information please contact me. 

Kind regards

Niels