Plugins vanished

Hi there,

I just installed the plugin and, once configured, all the plugins on the lefthand menu disappeared!
They’re still installed and functioning, but I can’t put them back on display on the left menu (and not all of them have the settings option in the plugin page).
I tried deactivating/reactivating all of them, and ginger too, but my knowledge ends here and I solved nothing…

What should I do?

Thanks a lot!