I heard back officially from Ring via email.
Apparently, they are only allowing posts about “unexpected guests” if these “guests” are " are suspicious and possibly place you or your neighbors in danger." So, my post about a solicitor who is ignoring an official city-provided no solicitation notice and who is breaking city code which is punishable by fine, jail time, or both is not a crime that warrents the attention of the Ring neighborhood community. Hopefully, none of these “unexpected guests” will ever convert into an assult, roberty, etc.
Here is their response to me:
"We’ve reviewed your post, and we feel that it’s not quite right for Neighbors. Based on feedback from our neighbors on which posts were most useful for them we have made changes to our guidelines regarding unexpected guests. If you feel that the actions of the individual are suspicious and possibly place you or your neighbors in danger, please repost with a description of why the behavior is concerning or contact your local law enforcement agency. We certainly appreciate your feedback as we are amending our guidelines on a regular basis while we figure out what neighbors feel are important updates on crime and safety.
Thank you for engaging with your neighbors in an effort to create a safer community.