Panel over deliveries

I purchased 1k views and woke up to 26k.... and no extra interaction ( Likes/Comment ) So I feel like that probably triggered youtube into unranking me or something because Before I ordered it I was ranked on a tag & now I'm not anymore... Is this hurting my channel ? Should I delete the video ?

wow, that's some uncontrolled over-delivery... but now i see you "only" have 18.9K so i guess some dropped, i know that low-cost traffic can de-rank a video if they use low retention, so first check the analytics stats.
anyway this will not "hurt" your channel, about the video if you want to try to re-rank it for some tags/key terms you may need to start over.

You can unlist that video, don't need to delete it.

Because you only buy view, not like or comment

You get what you order..