Just speculating based on my experience with other products. If I give a 1 star review to a defective or highly misleading product, I end up with physical mail

Just speculating based on my experience with other products. If I give a 1 star review to a defective or highly misleading product, I end up with physical mail to my mailbox with cards offering $30+ dollars for changing my review to 5 stars. I also get emails with boilerplate apologies and asking to change my review for money. The emails always give me the URL to change the review. So perhaps the vendors of the product you are linking to may be doing the same thing.