Remove the word “Chinese” from the review, and focus it on the seller and not the country. That way it will go through.
If you change “waited 2 months” to “waited months for it to ship from China”, then people reading your review will know what you mean, but Amazon won’t be able to claim you’re insulting an entire country.
(And no, I don’t think this review should have been censored. I’m only suggesting ways to sneak around those censors.)
Just say “Luxembourg” instead of “China”. People will catch on.