Adding more info:
[admin@MikroTik] /certificate> print
Flags: K - private-key, D - dsa, L - crl, C - smart-card-key, A - authority, I - issued, R - revoked, E - expired, T - trusted
# NAME COMMON-NAME SUBJECT-ALT-NAME FINGERPRINT
0 K L T cert_1 hotspot.addmydevice.com DNS:www.hotspot.addmydevice.com f1ecc5085973f13df2b4cfc...
1 L A T ca_2 COMODO RSA Domain Valid... 02ab57e4e67a0cb48dd2ff3...
2 L A T ca_3 COMODO RSA Certificatio... 4f32d5dc00f715250abcc48...
3 A T ca_4 AddTrust External CA Root 687fa451382278fff0c8b11...
I suspect it is either ca_2 or ca_3 as they are LAT certs which are CRLs, but ca_4 is not classified as a CRL.
Question to the forum/Mikrotik - exactly what happens when you get this Log error of CRL ignored? Does it not apply/use it or is it more of a warning but still is used? Thanks.