MacOS keyboard layout not working on linux trough barrier(synergy)

my issue is rather complicated, so I do not expect to find a solution, but maybe someone has had the same issue before me. My workspace is composed of 2 computers, a mac and a PC running Linux Manjaro. To avoid having 2 keyboards, I use the one from my Mac, with layout CH-DE. I'm having some trouble using *Barrier(Synergy)* between the mac as server and a Linux as client. My issue is: when typing

+

+

to write "

\

" this does not work on my client machine where instead I get:

/

. On both machines I have set the keyboard layout to *macintosh CH-DE* and **every combination without

+

** works correctly.\ The key combination

+

+

works perfectly fine **if i'm using an external wired keyboard** keeping the keyboard layout to *macintosh CH-DE*. I had to struggle with Barrier even to reach this situation. I had to use a config file on my mac that looks like this:

section: screens
	MBP:
		halfDuplexCapsLock = false
		halfDuplexNumLock = false
		halfDuplexScrollLock = false
		xtestIsXineramaUnaware = false
		preserveFocus = false
		switchCorners = none 
		switchCornerSize = 0
	manjaro:
		alt = altgr
		halfDuplexCapsLock = false
		halfDuplexNumLock = false
		halfDuplexScrollLock = false
		xtestIsXineramaUnaware = false
		preserveFocus = false
		switchCorners = none 
		switchCornerSize = 0
end

section: options
	relativeMouseMoves = true
	screenSaverSync = true
	win32KeepForeground = false
	clipboardSharing = true
	switchCorners = none +top-left +top-right +bottom-left +bottom-right 
	switchCornerSize = 0
	keystroke() = keystroke(Shift+>,*)
end

Note that I had to map the

key to

to make it work.\ Also the

<

didn't work properly: adding

(<) = keystroke(<,*)

solved the issue. So, I tried to add the following possibilities to solve the

+

+

problem:

keystroke(Alt+Shift+/) = keystroke(Alt+Shift+/,*)
keystroke(Alt+Shift+/) = keystroke(AltGr+Shift+/,*)
keystroke(Alt+Shift+7) = keystroke(Alt+Shift+7,*)
keystroke(Alt+Shift+7) = keystroke(AltGr+Shift+7,*)

But none of those options worked. My question is if there is an (other) way to solve that issue? Thank you in advance for reading my question and your reply.