@Andronikos 

Hello and thank you for your reply!

So, when I say they "vanish", I mean that the four powerline adopters are not on the list of Tether's OneMesh connected devices, (or even when checking on the AX55's web GUI).  I usually have to plug them in and out, each one of them separately, and then I can see them through the Tether Application as devices supporting OneMesh, ready to be connected via OneMesh with the WiFi router. 

About their structure: all 4 extenders are paired with one TL-PA8010P adapter, which is connected directly with the Archer AX55. 

Thank you in advance. 

  @Kevin_Z 

Hello again, Kevin!

Thank you very much for your assistance.

Was this ever resolved as I have the same issue. I have a number of RE devices 2 RE315 1 x RE205 in a mesh network from an AX90 with the TL-WPA8631P added in the mesh but every few days it goes offline and I cannot see it in the Advanced menu in the AX90 GUI Web Interface. I have to power it off and once it's gone through it's POST and booted up I have to re-add it via the advanced menu as it broadcasts itself and the mesh network then sees it whereas when it drops offline I cannot see it as a device to add!!

Details of the Powerline are as follows:

TL-WPA8631P v3.0

3.0.1 Build 20220330 Rel.52768

Could any udate be provided please?

Thanks

Paul

  @TitaniumBoy 

Hello and thank you for your reply,

Unfortunately, it seems that no, the issue still persists. 

However, (when I will be back in my house, I am currently studying abroad), I will try to check locally using the PLC application for each TL-WPA8631P device, whether the Power-Saving option is enabled or not. It should not be enabled according to a solution offered by the technical team of TP-LINK in Greece. This is something that I can not check remotely, since an update of the PLC application does not show the Power-saving option at all! So If I have any additional updates I will get back to you. 

Additionally, it seems that there are not any newer firmware updates, (I am using the last one) for the TL-WPA8631P devices, and the problem was also not fixed when an update of my wireless router Archer AX55, happened two weeks ago. 

......and yes up to now, every few days one of the four TL-WPA8631P devices connected to my Archer AX55 will disappear from the Mesh list and I will have to call somebody from my home to locally disconnect them from the power so I can re-add them to the Mesh list using the Tether app. Since you do not lose the rest of the devices I guess something is not correct with the TL-WPA8631P ones. 

I have the same: 

TL-WPA8631P v3.0

3.0.1 Build 20220330 Rel.52768

Thanks,

Andronikos