Ah, the classic "conversion tag fires too early" situation. The near one-to-one click-to-conversion ratio is your biggest clue - that usually means the tag is triggering on page load, button click, or form view, not the actual lead submission.
Here's what I'd check first:
🔹 Primary vs secondary conversion actions - confirm which is being used for bidding
🔹 "Include in Conversions" setting - might be excluding the right one
🔹 Campaign column selection - make sure you're looking at the correct conversion column
🔹 GTM preview mode and trigger condition - verify the tag only fires on form submit, not form view
🔹 Count setting - lead forms should typically be "One", not "Every"
If the tag fires before submission, pause any optimisation against that action until it's fixed. otherwise you'll optimise for accidental interactions, not real leads.