I recently bought LBP3 a few months ago when there was a huge sale, I bought it on PS4 and was happy to know that almost all my content that I had purchased was avaliable for me to download for free. However, I noticed the Marvel Kit and Costumes were gone.after failing to find them anywhere I contacted PSN support who told me that some DLC was still being implemented. I only now know that the DLC is no longer avaliable. Is there any way to get the costumes and level kit that I purchased? Or any way to get a refund? I just want to use the items that I had paid for.

I believe there is still a way to retrieve the now-nonexistent Marvel DLC for a PS4 LBP3 account if you've previous owned it, but I don't know exactly how. I've tried to help troubleshoot this with similar players in the past and they've had success stories, I just don't recall how it worked out. I'd recommend contacting StevenI.