Is this possible? Said they paid for my order?

I don't know what is relevant so I'm including everything for context. I ordered some food today. I tipped. I saw on the app it was taking a bit (driver was sitting at place so I assume the order was taking awhile) and they apparently left, because it said finding a new driver and time changed.

I had the order marked as leave at door. Once the driver arrived he called and texted to ask if I had my order. I was confused as he sounded worried and a bit panicked? I thought maybe some random person had grabbed it. So I called the person I ordered for and they didn't have it. The driver then said he had it the order and to come down and get it. But he wasn't sure if we had it already??? He said he paid cash for the order because there was a mixup and they they restaurant was confused about the order but wouldnt let him take it until he paid.

I let him know it came off my card. He said he was going to keep the receipt since he paid for it. He did not ask me to reimburse him but it was weird. I asked if he would contact postmates because he should be reimbursed as it came off my card. He also said that he was reimbursed with a 50% coupon by popeyes. He said he wanted to bless me and that he wasn't calling Postmates. It was just super weird the entire interaction. What was the purpose of this>? I immediately thought scam but he didn't directly ask me to pay him. His ratings said top rated or something similar but he didnt have like a rating listed and had no compliments listed like ive seen other drivers have.