Travel moves leaves a lot of PLA, no retraction?

Hi!
When I try to print something that has a lot of travel moves I get a very stringy result.

I see that the default Slicer Retraction setting is 2mm, should I increase this to 4mm? Would that help?

Also I’ve tried configuring a lot of Slicer settings like filament thickness and such, however I cannot print with an configured Slicer, I can only print when I override the Slicer settings, is this a bug?

The Printer won’t move with customized slicer but just fine with overriding with similiar settings.