Update 04/28/19: This issue has been fixed. You should now see purchased items immediately within the cash shop window
Thank you for your patience!
The game team is aware that there is a current known issue regarding the in-game cash shop. At this time, purchases made via the in-game cash shop do not immediately appear in the cash shop window. (Items purchased through the Web Shop are unaffected by this issue).
Fortunately, relogging should fix the issue and show the items you've purchased in the cash shop window.
In the meantime, the game team is investigating a fix for this issue and we will update this article when the issue has been resolved.
Thank you for your patience and understanding.