This is still not resolved.
I’ve been monitoring Logs and can’t find any suspicious activities.
Now I’ve added another trusted domain to the config.php and while I am able to reach the nextcloud wit this alternate URL and navigate within the files. The login-page gives me this error, when I reach it through the desired .cloud domain.
There were too many requests from your network. Retry later or contact your administrator if this is an error.
Is it possible, that .cloud domain are routed differently and are generating too many redirects?
This started once I’ve been forcing SSL with a 301 redirect. I’ve disabled this several times since then, without success.