Verify delivery deadline: Double-check the order details and compare the stated deadline with the actual delivery time.
Submit proof: If you delivered on time, gather evidence like screenshots, timestamps, or notifications showing the submission date.
Contact customer support: Reach out to the platform's support team with the proof to clarify the situation and dispute the late timing.
Notify the buyer: Inform the buyer about the issue and explain that you've delivered within the agreed timeframe to keep communication transparent.
Request adjustment: Ask support to adjust the order status to reflect on-time delivery.