I dont have an answer, but I just wanted to respond because it's pretty awesome seeing anyone else on Lemmy talking about Rocknix and ArkOS.
Have you got any idea why wifi wouldn't toggle on ArkOS? I've had a great experience with it on the RG353V, but it was a bit finicky the first time I tried it. I reflashed the firmware on a different microSD and that weirdly resolved the issues I had, which resolved around sound and Bluetooth not working right.