Jetstar flight credit

Hi guys,

I have a jetstar flight voucher from a flight cancelled back in 2021 due to COVID travel restrictions, it expires today. I tried to have a chat with them last night to see if this could be extended, but the request had to be emailed to a manager.

I just wanted to know if anyone has had any luck getting an extension on these flight vouchers, or if I should just book a flight now? (It's worth around $500)

Thanks!