Adding megakid custom repository with HACS (Hildebrand)

Hi,

I’ve recently received my IHD/CAD device from Glow and have been in the process of setting it up.

So far I have Home Assistant up and running, installed and setup MQTT, connected the IHD/CAD to it and now want to add the repository from megakid so I can install the integration into HACS but the https link is generating an error when trying to add it. (Not a valid add-on repository) Screenshot attached. Can anyone help?