Resolve a disputed charge

I need to resolve a disputed charge from a client who claims they never received the design files. The sale was for $420 on March 12 to Kara Mendes. Check the transaction thread for any messages from Kara, verify the shipping or delivery confirmation attached to the order, and if the files were sent, prepare an evidence packet: timestamped emails, download logs, and the original invoice. Then submit the evidence for dispute review and set a follow-up reminder for three business days to confirm the case status.

Before I submit evidence to overturn this chargeback from Kara Mendes, make it clear and persuasive for a reviewer who skims fast: put the $420 payment and March 12 date at the top, show a concise timeline of 'order, file delivery, client access' in three bullets, surface proof of delivery (download logs or delivery email) immediately, and flag any gaps—like missing IP or ambiguous timestamps—that might let the reviewer rule for the buyer.

Kara Mendes has opened a dispute saying she never received the design files I delivered. I have an email with a delivery link and download logs showing access, but the timestamps overlap with her timezone and I'm not sure if those logs are sufficient. What is the most likely outcome if I submit these logs as evidence, and what specific extra proof would reduce the risk of losing the dispute?

Across several disputes like Kara Mendes's, I win fewer than half even though I delivered files. I lose time gathering email chains and download logs, and buyers often claim non-delivery with no counter-evidence. Where am I leaking credibility, what one habit would change that ratio fastest, and how should I package delivery proof each time to make disputes stick in my favor?