Upside app on the cell phone

Has anyone here had trouble with the Upside app?
Recently we have downloaded it to our phones and it has been a constant struggle to get credit for what we have complied with, Either they have no record of transactions or we have to document , document, document that we did a transaction with the app . Very much time consuming and record keeping on our end. Recently had a transaction at a restaurant, submitted the proof and they cannot acknowledge it ever existed. So frustrating. What has your experience with this app been?

I haven’t tried Upside, but the concept sounds nice!