Kuvult,
Would you ensure that those of these couples who divorced – had a kosher get?
with all good intentions, this seems to be an illustration for Kiddushin ~ 13 discussion of those who do kiddushin and gittin without proper qualification and increasing mamzerim…
_IF_ taking money would disqualify kiddushin, surely you can ask a shaila, you may want to go back to that office, trace them to second marriages and file testimony that wedding was invalid with a beis din in case there are baalei teshuva coming from the second marriages