Digicert ACM stuck on Pending Issuance (error)

Hi,

I’m getting a Pending Issuance (error) message on any Digicert ACM I try to order for my domain. I’ve tried setting CAA records in the DNS, and have disabled and re-enabled Universal SSL in an attempt to force those changes to take effect, but to no avail so far. Can anyone point me in the right direction for a fix on this?

For reference, domain is briefly.app, CAA records currently look like this:

Many thanks in advance!