It will take some time for me to download NOX 5.1 to try it, but in the meantime I would suggest trying to find a download link for NOX 126.96.36.199 or whatever the previous version was and testing that to see if GG works properly on that.
Okey I try that
It worked. I use nox 188.8.131.52 now and GG works. Instantwin with 8k points works aswell. Thank u!