I have PlayOn Premium, and was grandfathered in due to having the previous version when they went to a sub format. So, I don't pay continuing sub costs. Anyway, I'm not too sure I understand the use of PlayLater. Most of what you pull off the web, (Hulu free, Crackle, etc.) is up there all the time sitting on their website. So, since it's there for a long time, why the need to record it to watch later? You can go to their website at anytime, and just watch that.
Now, I guess I could see the use of this if you had an IP tv stream (like ivi tv WAS) to record that, but baring that specific reason, why would I also need PlayLater?