I tried e-mailing support weeks ago and never got a response.
I now have a pocket full of sales receipts because I can no longer enter data in GasCubby! One of the first fields is the Odometer reading. When I click that, the numpad disappears. I have tried force-quitting the app, and restarting my phone. No luck.
I am running version 2.7.1 of the app on an iPhone 5S with iOS 8.1.3. I am hesitant to delete and reinstall because I don't want to lose all of my data.
It appears the owed apology is mine. I have memory of sending to email@example.com per the website's instruction, but can find no proof that I have done so recently.
Your suggestion worked, of course. It begs the question, however: When did it ever get turned OFF? It was NOT by me. (I say that--my memory, given the above, is obviously suspect! :-) ) But no one else uses my phone! Perhaps as part of an update?