You can simply change the country in your reviews by following this instruction:
Go to Get Reviews > Import Reviews > Click on the name of product to open the windows reviews of that products > Click on Edit button.
In this section, you can modify the countries.
Don’t forget to save it. (Please wait for 10 seconds or max 3 minutes for everything to be gathered)
I hope this might be cleared your issues.
Thanks for your patient on reading this instruction!
*NOTE: This Editing only worked for reviews by reviews, not bulking all the reviews at the same times for that specific products.
If you need some more helps, please feel free to contact us via live chat or email us at email@example.com