People confirm your valor purchases.
It might be prudent to purchase valor units in blocks of 10, 20, 30, etc...
Take a screenshot of your totals, purchasing only one valor unit at a time.
Why do that you're wondering?
Reports and observations are coming in of players buying 50 units, seeing the valor deducted from their account, and returning in a few minutes to make another purchase only to discover the valor was charged, but the unit totals rolled back.
Say you bought 50 BLUE STARS for 2,000 valor each.
Before making this particular purchase, you had zero BLUE STARS.
That costs 100,000 valor.
The 100,000 valor gets charged, somehow the BLUE STARS were returned into store stock.
The items were bought and paid for and seemed to be in the player's inventory, but disappeared along with the valor.
Try it in small smounts, say 5 or 10 and you'll see for yourselves.
Please let others know about this, because it seems to be widespread.
You might verify your purchases by taking before and after screenshots, because you'll need proof to try and get it remedied.