And what is the solution? What do you have to do?
who is liking your stuff? anons have lower tweepcred. if accts with higher tweepcred & way more followers like or repost your stuff periodically, then your cred increases, more so if they reply to you. it's like google's pagerank algo.
the idea of pagerank is based on graph theory. you are a node, & another user is a node. each like, reply, repost, is an edge between you. so if that user gives you three likes, you have three edges with them on the graph.
a page is higher ranked if other pages with higher ranks link to that page.
for X, your tweepcred will depend on how many edges (likes, replies, reposts, etc.) you have with more important acts.
big accts are like spokes on a bicycle bc they have tons of edges: thousands of people clicking like on their posts, people replying, reposting, etc. likewise, they don't NEED to reciprocate bc they are the big fish. for them to even reply to you & engage in a discussion is a big fucking deal.
if the last time you left a comment was a month ago, then you barely interact at all. that means your tweepcred probably barely exists. you need more of a record, so to speak.
start replying more on accounts that are bigger that you know for a FACT will reply to you. don't be a reply guy & send replies to an acct that never responds. the algorithm will see the lack of replies from the bigger acct & consider your replies "unwanted" & reduce your cred.