Sorry for our late reply! I also post it here:
Could you try to do one of the following and let us know if the issue is fixed?
1) Update Permalinks. To do this, go to Settings > Permalinks and just click Save Changes. Then go back to a Review page and reload it to see if the 404 error is gone.
2) If (1) didn’t solve the problem, try to deactivate the SEO Plugin you have installed, then do (1) again, and check again.
If the above didn’t solve the issues, we will need full access to your site to investigate further. By full access I mean WordPress administrator access and FTP credentials. Send us an email at email@example.com