I was having this same problem on my son's iPad and I was eventually able to get the purchase of minecoins to go through. Here's what I did:
Restart Minecraft
Go to store
Find the purchased item
Instead of tapping on the dollar amount button, tap the minecoins button
The app says it's already downloaded and will be re-added for free
Accept to proceed
The download succeeded within a few seconds
Seems like the problem for me was that I was tapping on the dollar amount and it was getting stuck. Once I tapped the mine coins button it worked correctly. Hopefully this works for others and is helpful. Good luck!
Tron Tronster
I was having this same problem on my son's iPad and I was eventually able to get the purchase of minecoins to go through. Here's what I did:
Restart Minecraft
Go to store
Find the purchased item
Instead of tapping on the dollar amount button, tap the minecoins button
The app says it's already downloaded and will be re-added for free
Accept to proceed
The download succeeded within a few seconds
Seems like the problem for me was that I was tapping on the dollar amount and it was getting stuck. Once I tapped the mine coins button it worked correctly. Hopefully this works for others and is helpful. Good luck!