The 'Special offers' popup appears only in the VIVE app the first time you set up your VIVE Flow, provided you haven't previously logged in to the VIVE app to set up or use a different VIVE Flow. If your promo code is not automatically applied, visit http://www.viveport.com/myredeem to redeem manually. Contact HTC support if assistance is needed.
iFixit is an official partner of HTC and an authorized authentic parts seller. Replacement parts are for devices out of warranty or repair damage; self-directed repairs may impact standard warranty. Consult customer care for assistance.