In the past they did answer very quickly. Not the case now, so it seems.
It also seems they are now using Sectigo. In the past this was Comodo. EDIT: nevermind Sectigo is the new name for Comodo.
Anyone has experience with Code Signing Certificate, Cheap Comodo Code Signing, Digital Code Signing
EDIT:
Oh boy … K Software Reviews | Read Customer Service Reviews of ksoftware.net
Hmmm… created a new thread for this. Code signing certs for Windows thread