Best answer by stephenrand
Staff member Nataly posted a few days ago
A quick update from our Tech Team - since our last release it's likely that (especially on Android) you'd need to scroll down the page to see the 'Submit' readings button, which wasn't needed before. We're looking to fix this in our next app release.
If that doesn't work, try logging off on the app and logging in at www.purepla.net