The list of available tags in the "Aggregated certificates" section misses one very important tag.

[table_course]

Aggregated certificates are actually built differently from the "single" certificates, so the available tags for this function are the ones you see in its list, not the ones you have in "Certificates".

As said above, you should use the [table_course] tag, even if it doesn't appear in the list. This tag will display a table with the list of courses included in the meta-certificate.