DW Focus issues with widget administration (WP admin crashes more often)

Hello DW Focus team,
I hope you can assist with two issues where one becoming more and more annoying.
This concerns the widget administration area in WP admin.
These days it is very hard to use this section because it crashes nearly every time I use it.
It might be a conflict or any kind of incompatibility with newer scripts or something else.
The other topic concerns the Widget DW Tabs. 
Here it is no longer possible to add other Widgets. 

What do you guys think – would you have time to check on my server and try to investigate what happened?
I\’d pay for your efforts.
Regards
Fabian