Finally I found a way to work with Tooll2 over a Remote Desktop connection.
Please specify true for the "enableSoftwareFallback" parameter in line Tooll\Rendering\D3DImageSharpDX.cs:84
like this
SetBackBuffer(D3DResourceType.IDirect3DSurface9, Surface.NativePointer, true ); // enableSoftwareFallback - for allow render in Remote Desktop Connection
According to https://docs.microsoft.com/en-us/dotnet/api/system.windows.interop.d3dimage
The D3DImage class does not display Direct3D content when WPF renders in software, such as over a Remote Desktop connection, unless you call SetBackBuffer(D3DResourceType, IntPtr, Boolean) and specify true for the enableSoftwareFallback parameter.