Authorization does not work anymore

Hello,

Since few weeks, the plugin does not work anymore.
Everything was fine during one year and now it always asks to authorize the plugin…
So, I got a new access code and registered it.
Then, it finds well the good view and when I press the button to save the modifications, it redirects to the main page saying that the settings are saved but asking to authorize the extension…

No errors are mentionned :

Count: 0
Last Error: 
GAPI Error: 

In the console, I noticed a warning :

Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('https://accounts.google.com') does not match the recipient window's origin ('https://...').

None new wp plugin was installed.

Any suggestion or help ?

Thanks