so right now I have 0.33 credit on my account, and for some reason when I try to buy a reclaimed metal on a pawn shop (it cost 0.33), it keeps telling me that I don't have enough credit. Is this a bug?
I'm trying to buy it from HOBOTRON's shop, if it matters : http://dispenser.tf/HOBOTRON

Umm, maybe it is because you are not having enough credit for a reclaimed (A reclaimed will cause you 0.33333 although it only shows as 0.33). The 0.33+ in your credit may not be exactly enough for a reclaimed. As for why it happens, it is hard to explain. All I could say is if you keep trading from pawn shop it would happen as they sometimes have pricing that is a little bit over the value of metal.

I too am having this same problem, and from a little tinkering, I discovered that the bot believes that you have 0.22 instead of 0.33
Not sure why, but it means I have a decimal or few away from true 0.33 in my credit, and I can't cash it out with anyone.

This needs to be fixed.
Literally says this:

"This is a BULK PURCHASE session, I will give you 1 items, 0.33 credit/ref is required. There is 0.33 credit in your account, you can settle with either credit or refined metal. "
It explicitly states I have 0.33, the website says I have 0.33, and I know from my past trades I have 0.33 but when you try to confirm it, nope.