Rated 5 out of 5 stars

IT WORKS, JUST CHANGE THE LINK WHERE IT MUST CONNECT TO GMAIL


I did this and it works now:

1) Save this text to a notepad empty file then Close Firefox
2) go to your profile C:\Users\[your account]\AppData\Roaming\Mozilla\Firefox\Profiles\[some random text].default\extensions
3) {582195F5-92E7-40a0-A127-DB71295901D7}.xpi rename with ZIP extension
4) inside this archive under folder named component edit this file named gmServiceGmail.js with notepad
5) Search inside this file gmServiceGmail.js text: " https://www.google.com/accounts/ServiceLoginAuth " and replace with " https://accounts.google.com/ServiceLoginAuth "
6) save edited file and update archive with edited file gmServiceGmail.js then rename it back to XPI
7) reopen Firefox then drag this modified XPI file in Firefox this will open extensions install window ....you're DONE


USE NOTEPADD++ to do this as it's easy and you don't need to unzip any file.

The only thing to do it change https://www.google.com/accounts/ServiceLoginAuth " by " https://accounts.google.com/ServiceLoginAuth "


VERY EASY !!!