We are sorry about the issues you are facing.
Please refer to this article and see if you can troubleshoot the issue by following the recommendations:
If that does not help, make sure to turn off all third party plugins and test for plugin conflict.
if you are using a cache plugin please make sure to flush the cache of your plugin before de-activating it.
If after that you are still facing issues:
@pollenbird Please provide your login credentials and URL so we can take a closer look.
@Gearcidy Please open a new thread and provide new credentials. When you provide credentials it should be on your own thread. The given credentials do not work.
@seb666_de Please Open a new thread explain your situation briefly and also the steps you already tried to troubleshoot the issue and also provide your credentials in a secure note.