Please follow these links to branded sites to register your products:
Positive Posture: https://www.positiveposture.com/warranty-support/register-your-product/
OHCO: https://ohcomassagechairs.com/product-registration/
Panasonic: https://www.panasonicmassagechairs.com/registration/
D.Core: https://www.dcoremassagechairs.com/product-registration/