Thanks for your detailed review. I appreciate it and will consider your feedbacks for future release.

About removing message from undesired person, in the latest version, I have integrated the Youtube's block/report button. It has some limitation, but my goal has always been to be able to use the native functions so that spammer can be reported and thus contributing to the community, whether or not they have the extension.

For people having trouble setting up, I have added default presets, but I suppose it can be improved even further.

As for a mobile version, sadly I'm alone and already too busy with the browser extension.