i get some buyer who cannot buy stuff from my bot, they said it always get notes

TRADE OFFER URL INVALID
Trade offer URL entered is invalid.

i try to do that too, and that happen to. so i try that URL and its work
seem bot have the problem to detect trade offer url

also dispenser seem cannot detect all my stuff. some stuff still apperar missing (i have 1 tf2 key not register and some steamgit not register too)