Atlantis wallet still in use

Atlantis wallet

A few question. I can’t access the Atlantis wallet page. It keeps coming up with a ‘server error’. I have tried on all browsers - brave/google/firefox and the same message comes up.

Is the Atlantis wallet stall able to access? If so what is the web address?

Or has the wallet been intergraded with another wallet?

If I can not access the wallet does it mean that my dero is lost and cannot be retrieved?