Clayton Jewelry Labs review for Bulk Price Editor Pro

Tried to add $1 to all listings, the app sets all listings to $1 instead of adding it. I selected the correct option and even tried it twice incase I did make mistake the first time, but same thing happened. Plus 1 star for having a revert button. Edit: The creators commented that this review is unfair. I do not see it that way. Yes, they did reach out to me, but they did not provide a fix to the problem, so the problem still stands/stood. When the app does not do one of its main features correctly, then how am I able to give it a good rating?