(Howard Lake MN)
We put our pool up, its completely even. We followed all directions. It's been up for about 3 weeks. The weather is getting warmer by the day. My son came home after just checking it 2 hrs before (it was fine). I found the entire liner was out of the pool. Why would this happen? Can we reuse the same liner? We didn't see any damage to it.
I can only assume you are talking about a beaded liner that completely came out of the bead receiver. My only suggestion would be to try it again, and use the sun.
Set the liner in full sun light and do as much filling as possible in the full sun.
As night time comes around turn the water and turn it on when the sun comes up. Make use of the sun and you may have different results this time.