The POSU not appearing in your wallet may be due to several reasons. The most common one is that the transaction is still in progress. If the transaction has gone through and the POSU is still not showing up, you may need to refer to your wallet's FAQ to see how to make it appear. This is likely because the collection is not being automatically detected by your wallet. For example, see Metamask's FAQ on that topic. The same explanation can be found on any other wallet supported by Polemix.

If you have further questions, you can email [email protected].