I bought a 200 gems chest and I won wood, stones and 400 gems. Suddenly I buy a chest to 200 gems, I pay and there is an error message that you have to restart the game. It is restarted alone, the resources earned in the first chest are still there but I have not not those of the 2nd chest and in passing I lost the 400 gems that I had won. That is to say, the game took me 400 gems and did not count the 2nd chest bought.
If there is a developer who can help me, I'm interested.