I just purchased a license for the PMDG 737 Overhead.  I connected after activating my license, but do not have a display on my ipad.  I also have a license for the CDU, and it does work, but not the Overhead.  Any help here?  Thanks, Pete

I assume you generated a QR code with AviaServer and scanned it with your iPad?

I had never tried the overhead on iPad or phone as a webapp - I always run it as a client on my laptop, but I just scanned the Overhead QR code with my iPhone and it works without a problem.

Check that your firewall isn't blocking the port used for the overhead - I believe it's port 32109...needs inbound and outbound access.