App stuck "Awaiting Certificates"

Currently seems to be taking ages to issue certs

$ fly certs list
Host Name                 Added                Status
tiles.anuinwardbound.com  28 minutes ago       Awaiting certificates
storage.anuinwardbound.com 28 minutes ago       Awaiting certificates
storage.bigdr.ink         4 weeks ago          Ready
tiles.bigdr.ink           4 weeks ago          Ready

DNS is working.

$ dig +short _acme-challenge.tiles.anuinwardbound.com txt
"tiles.anuinwardbound.com.****.flydns.net."

dig +short tiles.anuinwardbound.com aaa
137.66.**.**