moj ads optimization: persistent pixel firing issues causing inaccurate conversion tracking discrepancies

• just launched a new moj ads campaign, but i'm seeing weird conversion tracking issues.
• the moj pixel seems to fire, but reported conversions are wildly off, almost like duplicate events or misattribution.

i'm seeing this kind of thing in the debug console:

MojAds.PixelError: Event 'Purchase' fired without valid transaction_id. Status: 400 Bad Request.

has anyone dealt with persistant moj ads conversion tracking issues like this? need to pinpoint where the discrepancy's coming from.

waiting for an expert reply.