SSH is disabled on your firmware version.
If a change causes issues, perform a factory reset via the physical button on the back. orbi-ssh
Netgear has removed easy access to Telnet/SSH on most modern AX series routers. SSH is disabled on your firmware version
Use the password created during initial setup, not the default password . the alternative is flashing OpenWrt
Note: For many advanced users, the alternative is flashing OpenWrt, which provides full, native SSH access.
PuTTY (Windows), Terminal (macOS/Linux), or PowerShell. 2. Enabling SSH (Orbi Models RBR50/Older)