All cryptocurrency transactions need to be confirmed on the blockchain before they can be credited to your balance. You need at least one confirmation from the blockchain to get your purchase.
It’s normal to wait sometimes for your transactions to be confirmed, so don’t worry.
By using a higher fee, usually, transactions are confirmed faster on the blockchain, depending on the demand.
But, on the other hand, the cause of a slow confirmation can also be related to the number of unconfirmed transactions overall waiting for verification.
So, right now all you can do is wait a little bit, since this is an automated process, determined soley by the network.