Will not save entire grid!!! 12 squares, only saves 9 random squares – Grid Post Pic Collage Maker Review

I am very disappointed in this app. I upgraded to the premium version right away, before using it, and I wish that I had shopped around first! I have been trying to make a 12-picture grid with embedded videos on my iPad pro for literally two days. The app either crashes and I have to restart it (no option within the app to save projects,) or when I do go to save it, it is only saving 9 of the 12 squares, and the ones that it hasn't saved are totally random. With the pace of my business's needs, the unreliability of this app is a major setback. I will be shopping around for an alternative!
Review by Mooneez on Grid Post Pic Collage Maker.