One of my friends purchased the Summer Fun Plus pass from the Disney Store and his first use was yesterday. Somewhere over the course of the day he lost it. Because he lost it at DL and we had FPs for World of Color, we brought it up to the ticket booths since he had the receipt, the credit card used to buy it and a handstamp from leaving the parks. Thankfully, they were able to get us a courtesy pass for the rest of the night.
However since it wasn't purchased at the park itself, they couldn't track the ticket and give him a new one. The receipt had the ticket barcode number EXCEPT FOR the last 4 digits, which prevented them from being able to do anything. They told him to fill out a claim at Lost and Found (unlikely it will show up, especially because he didn't sign the back -_-) and bring the receipt back to the Disney Store and see what they can do.
Today, the Disney Store essentially told him that they had no idea why the park told him to go back to them because they couldn't do anything. The general consensus is he's going to have to buy another one if he wants to go again (which he doesn't have the money for), but is there any other avenues we could possibly try before giving up? Not a lot of people were very helpful about this whole situation - in fact the very first time we went to the ticket booth the guy refused to do anything for us. If I hadn't suggested to go back and see if they could phone the Plaza Inn (the place where we THINK he lost it), we wouldn't have spoken to someone else who was much more friendly and willing to help us out. So if there's any other method of communication we've or they've overlooked, please let us know!
Slightly off-topic: The lady at Lost and Found pretty much left her shift in the middle of helping us out. We were standing there for like 15 minutes since she just went to the back without saying anything to us until someone else asked us if we needed help, and we said, "______ is helping us with a lost ticket."
"Oh... I'm sorry, she's left for the night."