The delay or cancellation happened on flight outside of Europe, can RefundMyTicket claim ?
According to EU regulation, even if the delay occurred outside EU, the passenger might be eligible to receive a compensation.
If the delay occurred at the departure of a flight outside an EU territory, then, it is necessary that the carrier is a European one.
If the departure of the flight is situated in an EU territory, but the delay occurred during a stop outside the EU, your employee might be eligible if the time of arrival at final destination is more than 3 hours.