Can you please give us some examples of the posts that are being deleted? You seem to have some pretty good posting habits and aren't spamming around the forum. The only thing that I noticed about your post history is that you occasionally post these kind of replies :
Great to know, thanks for answering!
Most airdrops are worthless, there is no free lunch.
That makes sense, thanks for answering!
These kind of replies can be quickly glanced over by a moderator and thought to be abusive or spam. It doesn't really add anything to the conversation, and moderators might believe you are shill-bumping or spamming without giving it much thought or research.
Are you able to present which posts have been deleted, or within which threads they have been deleted? I doubt any moderator will be able to step forward and tell you why they've deleted your previous posts, because they honestly have probably moved on and forgotten about it by now. They have busy jobs. Replying to the deletion message is not going to do you any good, but if you even remember which board this took place on we could narrow it down a bit more.
Was the whole thread trashed?
I don't think you receive a message when the whole thread is trashed, do you?