This morning I woke up to 7 tf2 keys in my dispenser.tf inventory. The only thing that I sold overnight that involved keys was Metal Slug 3 2-pack, which sold for 2 keys 2 ref. I have not been able to figure out where the extra 5 keys come into play here. Checked all my previous sale histories through the Dispenser Bot's Inventory History and did not see anything that I sold for 5 keys that I did not withdraw.
Just thought I'd let the admins know, maybe you can help me solve this mystery.