I am upgrading OJS 3.1.1-1 to 3.1.1-4, the main change between both when you are submitting a manuscript is this message:
(checkbox) Yes, I agree to have my data collected and stored according to the privacy statement (link to http://ojsdomain.com/index.php/abrev/about/privacy).
But this links is to an inexistent page… 404 Not Found error page