I'd say try again if more than a week has passed. A gremlin glitch might have sidetracked something.
Per our happy host, ck1942, the process:
Simply copy and paste the following into your new PM template and send it to verified members you know are able to vouch for you and include ck1942 in the addressees:
"ck1942 instructed me to send you a vouching request and for you to confirm directly to him that we have sessioned within the past 90 days... no details are necessary, just the confirmation. I was instructed to copy him on the request and ask you to copy me on the confirmation, please."
So, an H2-registered member should PM a Vouch Request (make sure that's IN the title) to an already established member visited recently AND ck, and when the recipient responds with verification, she/he should send the message to both the person needing validation AND to ck.