On the phone I just use the Chrome browser and do it that way. It works way better for the Admin stuff I need to do. I haven't used the EO app or the full Tapatalk in months. That's why I'm going to be of no help with app problems.
Just tried the app again, still getting the same "Invalid License " message. If I tap OK on the error message, it closes the app, but a tap of the "back" button makes the message go away and gives access to the app.
This reply is from the app.
We have over 10,000 active Android users - and no errors reported to us via Google Play Admin. Please post a screen shot of your issues if you haven't already.