I had around 1090 diamonds and when I tried to purchase this weapon that's on 40% it didn't go through instead my diamonds was deducted for almost 500. So frustrating!
Note: Adding images to post feature is only available for APKPure AppStore App. APKPure can support the following image types: GIF, JPEG, PNG, WebP, etc.
Well on the homepage of the app click on options then click one restore purchases make sure you're logged in on the right hand side to Facebook and / or Google play or Apple Store. Whichever you use to download sniper 3D app. That should help! Good luck, but MOST IMPORTANTLY,
~~ HAVE FUN~~
BANG BANG 
Discover what you want easier, faster and safer.