Think you will need to contact hosting provider to resolve this issue. Here's why:
A curl test to your server returns a X-Loopia-Node whose IP address is a 172.22.x.x. In DNS your server's FQDN resolves to a 93.188.x.x IP address and in looking up that IP in DNS shows to be some sort of webcluster under the .loopia.se domain.
Yes, I understand you can login but can't get to any URL in your moodle that has /admin/ in it. In your config.php file is this line present?
$CFG->admin = 'admin';
There are also some config lines for ssl and reverse proxy ... if that's what X-Loopia-Node is:
// Enable when setting up advanced reverse proxy load balancing configurations,
// $CFG->reverseproxy = true;
// $CFG->sslproxy = true;
Don't there are many that host where you host nor run the loopia.se front end to your server so contact hosting provider.
'SoS', Ken