Session resolution while using Scalus

Hello,

I have an issue with Scalus tool while using 2 screens (work in extended mode).

the RDP session resolution get not compatible with screen resolution.

i tried to change rdp application from scalus management portal 

1- Windows RDP client with windows > resulted rdp session with very small resolution and can't be extended over one screen.

2- WindowsRDPdesktop or APP > resulted rdp session on half of one screen   

but when using one screen, no issue results.

thanks in advance,