As BedreVita posted, generally speaking, cards will show in the collection tab. if not, click on your your user name in the top right corner to find the synchronize with server tab and click on that once or twice, also in the settings tab click rebuild collection, maybe even restarting the istripper program could help. It has happened to me before.
If you bought a NFT show, that will appear in the trading cards tab, but as I have not bought one, I cannot offer any troubleshooting on that one, except maybe contact customer service.
Customer service email is found here... istripper.com/info