And sometimes fixes to incorrect information get rejected. My first edit was to correct an error where a restaurant had the website of a nearby shop listed. The website contained no information whatsoever about the restaurant (to my frustration, because I wanted to eat there).

My removal of the website got rejected. I think I needed to offer proof of some sort.

Adding info is easier: my second edit was adding opening hours to a shop. No proof needed. My submitted hours were not the official opening hours, because the shop always opens 15 minutes too late.