You should have 3 likes from 3 "different" established members. You have 4 likes only from 2 different members.
The problem is likely due to you not getting your likes from 3 different members, or some of your likes were profile likes which don't count towards you becoming established. Continue to make good posts and you'll get a 3rd member to like your post then you're set, good luck.
still same question after almost year and my answer still same you need to read FAQ https://forums.digitalpoint.com/thr...ers-answer-of-your-why-where-and-how.2637220/
Heh, I don't think the BST section is worth it anymore. Since they introduced likes, it's full of people selling stuff but nobody buying (because they can't post). People who are buying items don't have much of an incentive to post for likes than people who are selling.
Anyone can respond to WTB (want to buy)/WTS (want to sell) posts in buy, sell, trade provided they meet requirements set forth by thread starter. The likes restriction only affects thread starters.