Film review/contribution deleted without explanation

On Sunday, 28 September 2025, I submitted a user review for the 2024 film 'Black Creek' (contribution confirmation #250929-005815-719121). My submission was approved and the review went live on IMDb - and it clearly was not appreciated by some fans of the film, for mine was a very critical review, and it was immediately downvoted, and I immediately discovered that several of my most recent reviews on other films (all discoverable through my IMDb user profile) also suddenly received a downvote. Fast forward two days, and today, curiously, my review disappeared from IMDb. I followed the contribution submission guidelines; I did not post spoilers; I did not use profanity, or make personally disparaging remarks about the people involved in the film. I also did not receive an email or any notification offering explanation for why my review was deleted. I'm rather hoping to get some elucidation regarding this incident, and regarding the unexplained deletion of my contribution, as I now begin to wonder if it is actually worth my time to continue contributing to the IMDb community. Thank you for your time.