ok when you enter amount you want to buy into the box it sometimes pushes the 0 or whatever diget was there out of your view.
What we see:
You need
——-
| 5 |0
|__ |
@ 10s
Total :5g
We only see the 5, but the total cost using the 0 is displayed and charged if you have sufficient funds yet you only receive the amount of bought item within
visible box.