Thanks for the reply. Yes it works now. Your comment on Ben's questions also helped. So I just had to send the values as x-www-form-urlencoded. I was stuck on this for about a month. I was looking in the wrong direction, I kept thinking there was a problem with how I was sending the cookies or I was missing some cookie, especially the webTradeEligibility cookie as when I cleared my browsers cookies I could not trade, that cookie is not even needed when we request directly, that was strange.
Thanks again. Have a wonderful day.
Adwait got a reaction from Dr. McKay in Cookies Send to accept trade offer