https://www.tp-link.com/en/support/download/re705x/v1/#Firmware

@p3acemaker Oddly enough, nothing helped in my case. There must be another factor at play. AX80RU still writes that the extender is offline, although it is working and there are clients.

@p3acemaker Oh, thanks. I'll try that too. Of these options, the only one that's useful is airtime Fairness .

@p3acemaker TP-Link support didn't even respond to me on this forum. :-/

@David-TP After updating the extender RE705X EU v1.0 to firmware 1.2.10 Build 20250627 Rel. 66328, main router AX80RU v1.0 1.1.3 Build 20250113 rel.53544(5255) began to display the extender's...

good idea