If your recording status is "Paused" on one or more of your websites, it's because you've run out of recording credits. You can either wait until the next refill date or you can upgrade to a larger plan.
A method to avoid using all your recording credits before the month is over is to adjust the recording rate (adjusting the percentage of visitors that are recorded). You can read more about that here.
If your credits didn't automatically refill on the refill date, please see this article.