Thank you for your answer.
Yes. Turning Off BPS Login Security, it was possible to make the “No Login by Email Address” plugin, effective.
But because we lost the Brute Force Protection from BPS, I’ve tried with another plugin for this functionality only.
With the free version of the Loginizer plugin, I can have the “max retries, lockout time, max lockouts and so on” and then have a Brute Force Protection AND the “No Login by Email Address” plugin is working.
Also, I can use at the same time the “JTC Anti-Spam/Anti-Hacker” from BPS.
Maybe there is a more elegant solution, but this one is working for me.
Thank you !