I have a few CustomerIds that do not always have all the communication / channels available

Sometimes it is just email outbound that is not there, sometimes it is phone call outbound
First thought was obviously "no email / phone number" ... but adding these has made no difference

I can see nada in the system logs and nothing indicative in the Chrome dev console
<F12> disable cache <F5> doesn't change anything
Nor does incognito window
Can't Google anything helpful either
Would appreciate a nudge ( kick ) in the right direction