Twitter Hiding my Tweets, Ignoring Support Requests.

UPDATE: It seems it is a new "Twitter feature" called "Best Tweets First" that hides tweets in some cases. Seems a good feature lol..

My Twitter Account is @thestubborndev. My tweets no more appear in the various hashtags timelines but only in my profile and to persons who are following me, making Twitter completely useless.

I asked Twitter explanations yesterday and they are ignoring me, continuing to answer other users questions on their @Support account.