Welcome to the club and congrats!
Same here. I examined the search engine last month and noticed that only popular items are displayed which means that the changes they have made are affecting a good amount of authors. I reported this to the team but the response they gave me was very poor. Thus, however way they may have modified the algorithm was poorly done and a bad layout for items with unique titles and description other than the generic. I have read several posts on the forum from other noticeable authors complaining about the new algorithm and how it is affecting them and now yours.
I hope they revamp back to the old system or at least properly manage the new system in order to benefit all authors rather than few.
Congrats and keep it up!