The current Ruleset for "Breitbandmessung.de" does not allow a HTTPS to HTTP Downgrade, which is needed for parts of the site. The Following exclusion restores functionality: ``` <exclusion pattern="^http://breitbandmessung.de/(?:test|dev|edf|images|api|public)\" /> ``` Complete Ruleset: ``` <ruleset name="Breitbandmessung.de"> <exclusion pattern="^http://breitbandmessung.de/(?:test|dev|edf|images|api|public)\" /> <target host="breitbandmessung.de"/> <target host="www.breitbandmessung.de"/> <target host="dbs.breitbandmessung.de"/> <target host="gis.breitbandmessung.de"/> <rule from="^http:" to="https:"/> </ruleset> ``` Tested and Verified with Firefox 53.0 Ubuntu Regards,