Hi Linda, Sorry to hear about the door. Our guess is its sagging as it gets older. Our door panels will often prevent further sagging, however there is a better solution – A low profile, east to install, turnbuckle specifically designed for screen doors & available at hardware stores. Check out these links.
https://www.acehardware.com/departments/hardware/chain-and-rope/rope-and-chain-accessories/5294004
If you think PES caused the problem we are happy to ship one to you. Or let us know if the problem is different than described.
– The PES Team
