Errors Everywhere!

I love your plugin, but it does NOT like 4.0. What’s funny is it’s technically working, but it’s throwing errors all over the place. Here’s one:

Notice: Undefined index: _block_id in /public_html/wp-content/plugins/ads-by-datafeedrcom/inc/dfads.class.php on line 205

Which shows on the widget area where i’ve posted the shortcode for the ads. Also, I don’t have it checked in the settings, but it’s displaying anyway, so maybe that’s part of it.

https://wordpress.org/plugins/ads-by-datafeedrcom/