I sent off a support ticket, hopefully they sort it out, I was already in the process of moving a domain out anyway and was considering moving the others as they are nearing expiry/renewal anyway in a couple months.
I usually use Google Domains, they've been pretty solid for the last few years, the only reason I used Namecheap to begin with was because they were so cheap but now its almost the same price as most places to renew and theres little incentive to stay.
> You'll be fine, please contact us and we'll get you whitelisted. Point here if any confusion with our support team.