When I tried to buy something, my credit was gone same as the item I wished to buy as normal. After waiting for a while, when the bot should have sent me the item. I got my credit back but the item was still disappeared.

I tried to buy different items from different bots but it didn't work.
I've been encountering this problem for 3-4 days now so, I don't think it's gonna fix itself.

Can you look into the problem?

Thank you.

That is caused by the uncraftable keys in your inventory. Currently bot does not accept uncraftable keys on auto deposit. At the time being, try to replace those keys with craftable ones and it should work.