Yes. A cracked pool can be repaired, but it will require professional help. The cracks will need to be fixed and the pool will need to be resealed. If the cracks are not fixed, they will only get worse and the pool will eventually leak.

It depends. If the crack is superficial and doesn't go all the way through the plaster, it can be repaired. If the crack is more severe, or if it goes all the way through the plaster, then a new pool will need to be installed.