Been trying to resolve this for a couple of weeks now, so maybe someone here can help.
When I first added my domain to Hubspot, I set up a redirect to a temporary page on Carrd
Somehow, that redirect has got locked in, even though there are now no external redirect records.
All the pages using the domain render OK, but the following message shows when I try to publish my home page to the root domain:
If you can shed any light on a fix, I will be forever grateful. If I had any hair left, I’d be tearing it out with all the angst this phantom glitch has caused me. 
It sounds like you’ve been through a lot already with this issue. While I don’t have the answer, I’m happy to work through all the troubleshooting basics I know with you. So we can make sure we’ve crossed off as much as possible.
