Question About FB Plus

So yesterday I cancelled my FB Plus subscription and it told me it will still be on until the next month which is August 13th I believe it said.

I know all the FB Plus workouts and recipes will disappear for me but my question is about the challenges. Since I technically already paid for them and completed a majority of them except the new ones and I even have them all scheduled in my calender and the new ones scheduled for later months GOD willing. Do I still keep them and can still use them whenever since I technically paid for them or do they automatically disappear and I have to pay to put them back on my calender. Or if they are on my calender and say I would like to reschedule and do one I already did again can I do that or is it just a one time thing since I cancelled?

Hopefully all that makes sense.