Navigation menu widget

Hi, I use your theme which is very great, but I have spotted a surprising behaviour, and I am very annoyed by this…

With Solon theme, the “navigation menu widget” has disappeared.
My old widgets are replaced by “Solon : social profile widget” and they don’t work anymore with this new configuration. I’m under WordPress 5.4

Is there something I can do ? Can I just desactivate the social profile widget and get the navigation menu widget back ?

Thanks for all, and one more time, your work is just great.