This has become buried at nycnyne.net, so I wanted to get this added here. Three more months and I am playing with Let’s Encrypt at Namecheap again. I can get nycnyne.net working again with this one-liner and a copy/paste the key to the cPanel.
acme.sh --issue -d nycnyne.net -d www.nycnyne.net -w /home/swephc/public_html/nycnyne.net
But matthannan.net remains problematic.