App has a huge load of data on page load which is a big downside to google page speed insights. After a while it started blocking parts of my website including the header and toolbar. I used this on the impulse theme, not a good combination.
I'm so sorry for your bad experience with the app. I tried to contact you via email but not sure you got it. Please get back and we'll make the best gallery for your store :)
It never upload my pictures. App is very slow which I cannot upload my any of pictures or save anything.
I saw you are using free version of the app. It allow you to upload maximum of 12 images only. After that you cannot upload more. And I checked that you already upload 12 images :)