Many thanks, I can login to "Manage My Booking" , and I've seen the upgrade function in the Dashboard in my Privilege Club. But it needs Q Credit/Miles for upgrade, which I dont have.
The Upgrade option doesn't have Cash Upgrade offer.

So I may wait until a week or 2 out from departure to see any upgrade email available. I had a look at the expertflyer, and DOH-HEL leg is very full, not many business class seat left. Just hoping the PER-DOH is available (close to 12 hours flight)

Thanks