There are no orders in the mailbox

我的信箱內
沒有AVAST的訂單
我該怎麼取消訂閱阿
我不想再用了
請大家幫我

In my mailbox
No AVAST order
How can I cancel my subscription?
I don’t want to use it again.
Please help me.

Orders, Renewals, and Refunds - FAQs >> https://support.avast.com/en-ww/article/Order-Renew-Refund-FAQ

also see >> https://support.avast.com/en-ww/articleSearch/?searched=cancel