My Website - Status : Sleeping

I am a student and I was learning about while loop works in real time using php. But for some reason it got to Sleeping state on my next access. I am not able to access my file manager. Kindly help. I need to back up some file that I took hours and hours to create.

Site :-

Your website was suspended for exceeding the free plan’s limitations. I’ve unsuspended it. Be sure not to exceed them.