Did you make sure you picked the correct seller when you checked out on Amazon?
It needs to be sold by 220-electronics, other sellers have region locked ones.
I just looked, there are 2 listings for the same player, one is sold by 220 electronics and is the one you need
https://www.amazon.com/Region-Blu-ray-Player-110-240-Dynastar/dp/B07FZC283C
The other one is sold by Media Geru or something like that and has reviews saying it's not region free.
They don't, 220 sells them on the site
https://www.amazon.com/Region-Blu-ray-Player-110-240-Dynastar/dp/B07FZC283C