itch.io

I guess that proof reading is a form of testing, so your proof reader would be ineligible for judging. Ultimately, that's a question for the organisers to answer. At any rate, good luck with your game.

Good question - you've hit on a grey area in our otherwise clear-cut rules. But let's say that anyone with previous exposure to your game isn't able to vote on it (and that basically means beta testers, since all games must be previously unreleased). But, as a non-native English speaker, having someone check isolated text for clarity, outside of the context of your game, is probably okay.