If you bought the servos this year, unless they came from some VERY old stock from a dealer that has had them on hand for quite a few years, it's not the case of "old" servos. What are there serial numbers?
I think you've done the troubleshooting I'd have you do - get it down to the display, ADAHRS, and one servo (with that servo powered up, of course). What do you see when you do a network configuration in that state? Nothing at all for the servos? Or is the servo visible but with an error message?
I think you've done the troubleshooting I'd have you do - get it down to the display, ADAHRS, and one servo (with that servo powered up, of course). What do you see when you do a network configuration in that state? Nothing at all for the servos? Or is the servo visible but with an error message?