I had a similar problem with Apple's App Store not enabling the update at the same time Serif notified me that AP had been upgraded. After a number of hours Apple finally made the upgrade available. It seems to me, a simple user, that Serif would want to know every legitimate user of their products. We should be able to register our products with Serif regardless of where they are purchased. For that matter, why wouldn't Serif want to know specifically who has legitimate copies of their products? I logged on to my account on the Serif site and sure enough there is no record that I had actually purchased AP back in 2017. Luckily, I kept my original receipt from Apple but my legitimate copy of AP is not registered with Serif. I think the only reason I even get update notices is because I purchased a copy of the AP book. Don't see why I should have to purchase another copy of the product directly from Serif to get my copy of AP registered.