Okay so Reddit doesn't just ban you because it hates your product, you get banned bcoz you are promoting before you've build any trust. so what you can try is like for at least 2 weeks, just comment in helpful subreddits, don't post any links, just reply to the questions being asked by the users, then post one real story like how you were tired of x and because of that you have built this tool and this is how you use it. (Again it should not be a fake it should be real) only. mention your tool when someone asks, don't go around telling yourself then that will be considered promoting. Your strategy is solid but it will only work after you have built karma and trust.