[paul46038]

Update, after emailing Mike: So it was the email issue. See, "my" tablet was actually my son's but he had stopped using it and I needed something to try out Mobilesheets. So I  adopted/requisitioned/stole the tablet and bought MSP before I realized that I needed to change the Google account from my son's to mine. I switched the account back, updated the app, and switched back to my account and we're good to go.

Many thanks, Mike!