OK. Flint 2. Worked. Nothing banned. Thanks!
But on Mudi v2 (my other router) no such setting, maybe @bruce or @alzhao will help?
It seems to be different in routers. On my Spitz v2 and Puli routers there is no such feature. 4.3.19 is latest available. Yeah, I have four different GL routers. Love them!