Hmm, I'm checking. It says you have 278.004 POSH on Hive-engine, did you earn or remember buying them?
Other than that on Twitter the only thing that's required and will trigger @poshtoken to comment under your post is sharing your post through peakd/hive.blog/ecency/leofinance and adding the #hive tag.
Never bought any... the #hive tag goes on the Hive post? We're not hash-tagging in tweets anymore right?
Alright then I guess you must be registered properly. The tag needs to go on the tweet but it's the only tag requirement. We'll work on adding more front-ends among the above mentioned 4 as well soon.