Hi  @robrbaron ,

If a specific device is having trouble connecting to the Router Wi-Fi network:

    1) Check the Blacklist in the Tether APP.

    2) Update the driver of the client device.

    3) Login to the web management interface of the Router, go to Advanced > Wireless > Wireless Settings, disable the "Smart Connect".

    4) Change the encryption method into "WPA2-PSK/WPA-PSK" to improve compatibility with older devices.

5) Try other wireless modes as well.

6) Try 5G band of guest network for a comparison.

7) Please try to contact Media PC’s support and check the settings of Media PC. You may need to hard reset the Media PC.

  @Joseph-TP thanks for ideas,

1) no blacklist set

2) driver of the client device.  is the most recent MS one,  used RTL from 2022, no change

3)  "Smart Connect".  ok, but this is last resort as major point of upgrade is to use this

4)  encryption method : no change. the RTL connects to the A9 just fine.

5) Try other wireless modes as well.    << what modes do you mean ? 

          5.1  the RTL woirks if i select b/g/n/ac , on the 2.4 band. 

         5.2  but if i force to a/n/ac 5G fails

6) Try 5G band of guest for a comparison. same error

7) Media PC’s: this is an addon USB network, as the built in is Wifi-b only.

Hi  @robrbaron 

We have reported the issue to the support engineers, they will likely reach out to you via email to continue to troubleshoot your issue. Please check your email box and confirm.