Linus went over this on the WAN show. Apparently the option to hide pop-ups is only available to subscribers in the new subscriber version and is not an option for those on a perpetual license.
Paying for a subscription and yet still receive a debt collection notice doesn't instill a lot of confidence in the business practices of that company if this poster's comments are accurate: https://news.ycombinator.com/item?id=27078542
That previous HN thread and Linus' tweet showing how they abuse their paying customers with nagware are enough to make me avoid them. What's the best paid or free alternative?