Are they verified for Amazon FBA? Do you have the Telegram contact of the person you’re working with?
For me, verified reviews are important because, with Amazon KDP, you can offer your Kindle book for free for up to 5 days every 90 days. So, I asked him to download my book during the two days it was free.
I talked to some other people offering the same service, and one suggested spreading the reviews across a free book, a low-priced book, and a full-price book. I decided against that because it would have been too costly.
Just so you know, I’ve received about 10 reviews and 40 ratings so far. The 10 reviews were good, but one didn’t relate to my product, so I asked him to change it. You’ll need to check each review individually.
I’m in touch with him through Messenger, and I’ll ask if he has a Telegram account.