After the December 18th 2018 QAWeb Server update, your QAWeb Relay is no longer communicating with QAWeb Server. This results in a 'Facility Connectivity Issue' on QAWeb Server.
The QAWeb Server update to version 1.11.12 has fixed several vulnerabilities. To do that, we had to stop supporting old communication technology which was used by QAWeb Relay versions lower than v1.10.
Upgrade your QAWeb Relay to the latest version. Find out here where you can download this latest version: [KB6430].