why my add-on will be disable after updating firefox
I developed an add-on and it was verified by Firefox. Users installed this add-on and used this. But when they updated Firefox to version 50.0, this add-on doesn't work. (Note: add-on did not be removed or disabled after updating Firefox, It just doesn't work at all).
I noticed that you just posted the same question on stackoverflow.com
Usually, when an add-on isn't working, we advice the user to contact the developer, which in this case happens to be you. You marked your add-on as 'experimental'; maybe it needs some adjustments ?