Gmail is still working with 3.5.23

FF 53.0.2 64 bits

Recently Gmail updated their login page, and by default, the account is activated in high-security
so disable in low and wait a fews hours !

For 4.0.2 (never working for me)... try my method too!

add:  fews hours = 20h

work with 2 gmail + 1 yahoo + 2 hotmail >