Unfortunately, I still have problems with the site. Who can help here?

the registration only worked yesterday via iphone. in the browser (firefox and IE) the click on register didn't work. now i'd like to use the "forgotten password" to log in to the pc. the password from yesterday (iphone) doesn't remember anymore and it's also not stored there. the click on "forgotten password" unfortunately only shows the following message after entering the mail address: "Request has been terminated Possible causes: the network is offline, Origin is not allowed by Access-Control-Allow-Origin, the page is being unloaded, etc.".

who can help or what should i do now?