I haven't found any information about the logo size.
I try to pickup a picture in my gallery but after disconnection, impossible to reconnect.
I've an error message in the popup windows due to a large picture...
but impossible to reconnect to access to admin and change it.
My last solution to access again to my site :
- remove hardly the plugin files and the and the parameters in the data base.
- re-install plugin (without a logo...)