You created your post (topic) in the "Bitcoin discussion" board. It is a general board for discussions about Bitcoin and related topics, but nothing else. That's probably the reason why your topic was deleted.
Having to post it on a Bitcoin discussion board is the exclusion you did to your thread, it’s off board and depending on the moderator, it’s got to find its way to the right board or end up as a deleted post. Either way, deleting posts is a common thing on the forum and you might see a lot of that in time if you aren’t posting where you should or making off point comments.
You can always create the thread again and with more content to describe your service and how to work it, a proper Ann thread too.