Widget Dashboard Frozen

I used this plugin to replace the Genesis Featured Widget Amplified plugin because my widget dashboard was frozen. Yesterday I deactivated and deleted GFWA and installed Genesis Sandbox Featured Content Widget and my site was functioning properly. Today my administrative widget dashboard is frozen again. If I deactivate Genesis Sandbox, then it works properly. How can I continue to use this plugin and keep my site working appropriately?
Thanks.

https://wordpress.org/plugins/genesis-featured-content-widget/