Doesnt save some images or updates!

It is an awesome app up to a point. I had successfully entered 5 cards and then something went wrong. I tried to add a new image or add the front and backsides of some cards and it wouldnt save the images or updates. Idk what the issue is. It worked on a couple of cards and then it just quit saving the new images. Please fix this issue. I would like to give it 5 stars but I cant due to this issue.

Winterhalter about Stocard - Rewards Cards Wallet, v6.2.3