The foreign-currency amount received is less than my client sent. How do I trace the difference?

Compare the amount and currency on the payer's completed receipt with the amount Skydo records as received. Keep this check separate from the later INR conversion and Skydo fee calculation.

Ask the payer's bank for a breakdown of charges and, for a SWIFT transfer, the available payment trace. Send those records and the Skydo reference to support@skydo.com. Ask which amount reached the receiving account and whether any difference was taken earlier in the payment chain. Do not label the shortfall a Skydo fee without a breakdown. If the client actually sent less than the invoice amount, resolve that commercial balance with them separately.