sub.example.com: login.grandid.ml: The CNAME record is not pointing to the right destination.
www.sub.example.com: The required CNAME record could not be found.
If you get an error saying your CNAME records are not correct… maybe try setting the CNAME records correctly?
https://infinityfree.net/support/how-to-create-cname-records-for-free-ssl/
Already done all that
Well, not correctly it seems:
It is working now
I checked it again and it looks fine now. Please note that it can take up to 24 hours for the CNAME changes to take effect.