From our understanding, the concept of repeats is not something that is related to HTML to PDF generation.
More powerful report generators have a complex UI of their own to set repeatable data bindings and other complex designs for the report. Something like Crystal Reports come to mind.
The logic here is to generate your HTML and supply that to the extension.
You can use repeat in server action and set value to first generate your table HTML. Then just pass that to the extension.
Something like this:
Repeat in eMail body