@Kevin_Gozk 

Hi,

Are you saying that you entered new network names in the fields "Extended 2.4GHz SSID:" and "Extended 5GHz SSID:" and then clicked on the [SAVE] button, but after rebooting the extender has restored the original names again?

  @woozle 

If when I click the save button, the network names always come back to the same, it doesn't matter if I restart it or not or if I try to change it from the application or from the browser.

 For example, my main network is Totalplay_Gnzlz_2.4G and Totalplay_Gnzlz_5G, when connecting the repeater to that network, the name of the extended networks is Totalplay_Gnzlz_2.4G and Totalplay_Gnlz_5G. and that cause  Problems in all devices connected to the network. And the repeater does not allow me to change the names because if I change it after a few seconds it returns to the same name Totalplay_Gnzlz_2.4G Y Totalplay_Gnzlz_5G regardless of whether the main network is that or not also happens even if I connect to a different network the names are always the same 

  @Kevin_Gozk 

Have you connected the RE305 as a regular range extender or as an OneMesh/EasyMesh device? In OneMesh/EasyMesh networks the SSIDs of all devices will always be the same.

What is the brand and model number of your router?

  @woozle 

No, I never connect it to mesh, I use it normally connected to the router. And it has only been used for a month, the problem occurred after updating the firmware. My router is Huawei. But I connected it to another Brand and even my cell phone network and the name is always the same TotalplayGnzlz_2.4 and Totalplay_Gnzlz_5G. Even when turning off a 2.4 or 5G network from the Tether app the repeater reboots and turns it back on 

  @Kevin_Gozk 

Ok, I see. That the problem started after updating the firmware is important information.

I suggest you perform a "FACTORY RESTORE" from the menu Settings > System Tools > Backup & Restore and then try again if it is possible to change the Extended SSIDs.

If it still doesn't work, then this problem should be investigated the official TP-Link Support.

  @woozle 

Yes, I already tried to factory reset from the tether application and from the browser but the problem persists even when the network of that name is not nearby or connected 

  @David-TP  

The repeater is a Huawei echolife HG8145V5

If when changing the name when disconnected from the network, the name that I put on both networks remains.But when connecting to the network the name changes back to the same without me changing it 

  @David-TP 

Yeah. It doesn't matter if I click copy SSID or not, a few seconds after connecting the network the name changes by itself. I already received an email from tp link support advising that they will contact me