We just don't have many Mac users here, currently. There are a couple of issues covered in this section of the FAQ:
https://inkscape.org/en/learn/faq/#mac-os-x-specific-issues Maybe one of those is your culprit?
If those don't solve the problem, I'd suggest trying the IRC channel - the developer channel, because if there is some new issue, they will be able to help. irc://irc.freenode.org/#inkscape-devel The channel for Inkscape users is probably more active, and you might be able to get some help there as well -- irc://irc.freenode.org/#inkscape (Many developers participate there too.)
If you don't have any luck there, go for the development mailing list.
https://inkscape.org/en/community/mailing-lists/#inkscape-devel If you don't want to subscribe to the list, I could post for you (as a one time thing). It would be better for you to post directly, because relaying info back and forth can get confusing. But I don't mind posting for someone else, as a one time thing, if that's your best choice.
