Hi Andre,
We have switched our DNS server yesterday, and due to this you may be experiencing this issue. The issue has been resolved, but if the old cached pages are loaded, then this issue might have occurred. Can you please clear your browser cache and try again? If you still face the same problem, please use the following command in your command prompt (in Admin mode) to flush the DNS data
Command: ipconfig /flushdns
Check this link for reference.
Regards,
Vijayakumar Y.