One thing to keep in mind your travel funds expire 1 year from when you bought your ticket and if you cancelled outside of the exception timeframe your funds could be expired and that might be why you can't find the funds. If you cancelled before March of 2020 or after September 7th 2020 your funds expire 1 year from when you bought your ticket. If you cancelled during this time period your funds should be valid till September 7th 2022.
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