After clicking on the button a couple of time more, I am finally registered.
Looks like they sending out some different offers.

Double Qmiles across all cabins plus, double Qpoints
Let’s rediscover the world together and return to what you have been missing, whether it is relaxing on a secluded beach, marvelling at remarkable urban skylines or wandering through breathtaking landscapes.
Save on Economy and Business Class return tickets when you book by 9 October 2020 to one of the destinations you have been waiting to visit.
As a Privilege Club member you'll enjoy double Qmiles across all cabins plus, double Qpoints for bookings on qatarairways.com or the mobile appin Business or First Class.
Simply register at least 24 hours prior to travel and we'll automatically credit your account once you've flown.
Book today, change when you need and travel when you are ready. What are you waiting for? It’s time to rediscover the world together.
*Terms and conditions apply; please review at the time of booking.
Should you have any queries regarding this offer, please quote the offer code: 2009PC047 when you contact our Member Service Centre.
Terms and conditions
- This offer is only applicable to Privilege Club main members.
- Booking Period: 08 October 2020 to 09 October 2020
- Travel Period: 08 October 2020 to 30 September 2021
- Registration Period: 08 October 2020 to 30 September 2021
- To be eligible for this offer, members need to:
o Register for this offer at least 24 hours prior to travel by logging into their account at qmiles.com and selecting “My Offers” from the dashboard menu.
o Ensure to quote their Privilege Club membership number at the time of booking or check-in.
- Existing tickets issued prior to the offer booking period; will not be eligible for the promotional bonus, if reissued during the offer period.
- Members will earn bonus Qmiles over the base Qmiles earned on Qatar Airways during the offer period.
- Tier bonuses, promotional bonus and family accrued Qmiles will not be taken into account in the calculation of the offer bonus.
- Bonus Qmiles are calculated based on the combination of booking date, flight date, cabin, fare family purchased
- Offer is applicable only for flights marketed and operated by Qatar Airways.
- In case of overlapping campaigns, members will earn the highest bonus currency.
- Term currency refers to Qmiles, Qpoints or Qcredits
- Members may use this offer more than once during the offer period.
- Offer is not applicable for tickets booked prior to booking period start date and after booking period end date.