Sunwing has finally announced that they will be issuing refunds for hotels, flights and vacation packages for scheduled travel from February 1, 2020 onwards.
Eligible customers and travel agents must submit a request through the online COVID-19 refund request form by August 27, 2021.
link:
https://www.sunwing.ca/en/request-a-refund
(detailed FAQ at the bottom about refunds)