[Zubersoft]

Version 3.9.3 is the latest version. So you need to update the Pixel to version 3.9.3. The only thing you should need to do is log into the Google Play Store with the email address you used to purchase MobileSheets, search for MobileSheets and tap the update button on the store page. If you can't do this, it means Google can't recognize the purchase for some reason. I would offer to help you update outside the Play Store, but that doesn't work on Chromebook devices, so you'll have to get the store working. Otherwise you'll have to backup the library uninstall and reinstall MobileSheets, then restore the library from the backup.

Yes, you can connect an iPad to an Android device like the Pixel over WiFi when using the sync library feature. The latest iPad version is 3.9.3 as well now though, so you'd still want the devices on the same version.

Mike