Broken link checker hanging up on valid website
I've got a campaign that I've sent many times before (with updated copy) that now hangs up when clicking Save & Next. I've narrowed it down to it hanging up on my client's URL: sandhollowwine.com.
The website clearly works when visiting it, but for some reason Sendy thinks it's a broken link. When I remove all of the links except one, I'll get a broken link error. When I keep all of the links to that URL in (probably ~8), it just hangs up and stalls out.
Not sure what to do from here. Please help!