Hi again,
we have now added “HiFi Active Sky FS” into our Navigraph Hub. Please be sure, that you have installed the latest version of Active Sky FS. The AIRAC data update works from version 8883 upwards …
In the Hub, on the left side, take “Microsoft Flight Simulator - Installed outside Simulator” → press the “Install” button in the “HiFi Active Sky FS” line. Thats it … 
To check, if the update works correctly, look directly in the Active Sky app (left upper corner):
From now on, we fully support this addon too …
Have fun and let us know, when something don´t work please
Cheers,
Richard