I have changed the theme on my wordpress webpage and wanted to customize the settings. But now the site is not able do load because firefox ist blocking it. It shows a field which tells that the webpage has a Content Security Policity (CSP) that inhibits to embed this site. Firefox doesn't allow to load this site for this reason. By searching in the web i found out, this could be because this is a german umlaut-url. But couldn't find a way to handle it, so that i can get access to my theme options. Hope somebody can help in a easy understandable way!