No not so weird Cedric because I could not get through my administration domain at all.
I have now found a way by disconnecting temporarily all plugins from the main Control Panel. But unfortunately now I have problems with my Gallery and Contact Us form which disappeared from sight. My contact form 7 has disappeared. I am not a technician unfortunately and I do not know what to do.
Please help because I do not know what to do.
Thanks
Claudio