I replied elsewhere, but I saw your post here just now, so let me repeat the information:

The downvote wasn't personal, and I'm happy to have you here.

The downvoting is done automatically by a voting bot that I was asked to setup to counter the huge random votes from an account called ranchorelaxo (and another associated account called haejin). These accounts were previously abusively voting on Steem and now he's trying the same tricks on Hive.