Lifting?

A few months ago I changed my finishing process, hoping to make my paintings more resistant to light, humidity, etc.  Since then, I have had to reglue two that have lifted off the supports.  If you are having problems with one of my paintings, please contact me.  I will fix it using my old system.  I have paintings in the light, in the humidity in my bathroom that have been hanging there for 10 years.  I don't know why I thought I needed to do more with them!