You can just print the page to a pdf (Control + P on Windows, Command + P on Mac).
After pressing the shortcut, you should see something like this (depends on your browser):
Change the dropdown to "Save to PDF" (again, depends on your browser).
Now it should let you choose where to save, and after that, you're good to go! However, it will not ...
I have been struggling with the same. On my FB page, I have more than 30 reviews, but it says 0 reviews 0 rating and I have been trying to contact FB help, without any luck. Would be happy if anyone has an answer here
If it's a business page, go to "Settings" that is in a column on the left side of the page. Click "Page Settings" then "Visitor Posts." Click "Disable posts by other members" and save. You don't have to block or ban anyone to limit the content on your page. Good luck.