I painted all rooms 4 years ago when moving into this home.

Last year I had extra insulation blown into the exterior of the home. Since that was done, there are patches of paint cracking/peeling, but only on the outside walls of some of the rooms.

Does anyone have a solution on what caused this?

I’ve had some of the cracked spots repaired, but did not re-paint to see if anymore cracking would occur and indeed it did.

Any solution???