as I found to rework my migrated and updated installation was taking too long and difficult on my hoster's server, I agreed with my bosses to install the new moodle 3.2.2. I did that.
I also installed a ssl-certificate as a wildcard *maindomain.de for the moodle subdomain: https://elearning.maindomain.de
Now I came up with a problem with the site policy agreement.
If I write elearning.maindomain.de/policy-agreement.htm, the site policy is not shown but the hint not found on this server.
If I write https://elearning.maindomain.de/policy-agreement.htm, I cant't save it because of the message 404 forbidden.
If I write http://elearning.maindomain.de/policy-agreement.htm, the window is empty in the common browsers like Firefox 52.0.2, Opera, Chrome but it is shown in Maxthon.
If I put the URL in the browsers mentioned above directly, the policy-agreement.htm is shown correctly.
Found out deleting moodle's cache and browser's cache doesn't make any difference.
Any ideas or advices?
Thanks for your help!