I’m very sorry to hear you’re having trouble interacting with some items in your inventory. Most known display errors with the inventory are temporary and can be resolved by fully closing and restarting the game. Have you tried running an RDB rebuild, yet?
This should address any corrupted or missing files that could be interfering with your ability to utilize this feature. If that doesn’t help, I highly recommend submitting an email ticket through Funcom Help - Funcom for further investigation.