Thank you for this. A big clue, as I have Avast, which uses exactly the same engine as AVG.
I have found a solution which works with Avast, and will probably work with AVG too.
If you revoke all of the antivirus app's permissions in the Accessibility menu (Settings > Accessibility > Installed apps) then the AIS app loads quite smoothly.
This accessibility permission is required by Avast/AVG to run the Web Shield function which checks out internet connections, links etc. It seems that Avast and AVG (maybe others) are not allowing MyAIS to connect to the net.
Make sure you restore the permission after you have finished. Your AV app needs it.