Accidentally wrote in your Rocketbook notebook with a non-compatible pen? Not to worry, there are a few hacks. You can try rubbing alcohol, hand sanitizer, nail polish remover or bleach on a cotton swab. A light scrub with any of these should help clear that unwanted ink. Please be careful though, as some of these methods could remove the dots on your pages. So if you use it over a symbol, you may not be able to select said symbol on that particular page in the future. Good luck!