Just to clarify a couple of points:
1) Your email address for CIN, CompTIA, and the e-mail address used to register on On24 for the sessions should all be the same address. They don't have to be a "work" e-mail, per se; only that it's the same across the board. If they are different, it's harder for the CompTIA Data team to validate the attendee. Duplicates are often screened out as well as other measures to prevent fraud.
2) All sessions must be completed, generally between 1-2 weeks after the end of the last session. Normally, it's two weeks. For Cloud+, it was just one, since there were only four sessions in the series.
3) Processing of vouchers can take a fair bit of time - depending on how well attended the sessions were.
HTH
/r