@Doreen22 I don't believe there is any way to extend it. What you might consider doing is using it to book something close to home for a short getaway. A friend of mine (who, oddly enough, just lives down the road from you, in Courtenay), has used her vouchers sometimes to book a motorhome on the beach just 20 minutes from her house. It's a nice change of scene, she can get out of her home environment and forget about her endless lists of things to do, just relax, read a book, and listen to the ocean waves.
But I don't know- are all Airbnbs still closed down up there?