SSID password changes itself.

[twodose25]

Setting up new Asus RT-AX88U Pro.

Advanced, Wireless tab < 2.4g, create ssid and key, go to 5g, create different ssid and different password, go back to 2.4 to check key, stays the same, then go to 5g to check the key and it changes to the key that was used for the 2.4g.
This is on a new router, sent first one back because of this, and the second does the same thing.
Only does this with asus stock firmware, not with asuswrt merlin.
Smart connect disabled.
Hitting apply after change.
Asus Stock Firmware < Version 3.0.0.6.102_33352
Asuswrt-Merlin < Ver.3004.388.8.4

 

[Tech9]

Browser Auto Fill playing games with you perhaps?

 

[twodose25]

no

 

[twodose25]

its a simple setting during setup, I thought I was crazy, but thats what it is doing, didnt do it on my old rt-ac88u router that was purchased in 2016. but that had asuswrt on it from the day I set it up.

 

[Tech9]

No one else reported this issue...

 

[bbunge]

Your solution is to use Dual Band SmartConnect

 

[twodose25]

dont want to use that, why does it work with asuswrt? I tried several times, flashing back and forth, does the same thing everytime with stock asus firmware.

 

[bennor]

dont want to use that, why does it work with asuswrt? I tried several times, flashing back and forth, does the same thing everytime with stock asus firmware.

Have you tried using a different web browser and or a different computer/device to setup the router?
Have you tried a hard factory reset? With the flashing back and forth between firmware's its possible something got corrupted.

[Wireless Router] ASUS router Hard Factory Reset - Method 2 | Official Support | ASUS Global

 

[leventozler]

Setting up new Asus RT-AX88U Pro.

Advanced, Wireless tab < 2.4g, create ssid and key, go to 5g, create different ssid and different password, go back to 2.4 to check key, stays the same, then go to 5g to check the key and it changes to the key that was used for the 2.4g.
This is on a new router, sent first one back because of this, and the second does the same thing.
Only does this with asus stock firmware, not with asuswrt merlin.
Smart connect disabled.
Hitting apply after change.
Asus Stock Firmware < Version 3.0.0.6.102_33352
Asuswrt-Merlin < Ver.3004.388.8.4

The exact same thing happens with Protected Management Frames setting, it shows wrong setting from another band while switching.

Emptying cache & refresh is a temporary fix, so I made a habit of flushing cache via keyboard shortcut and reloading the page before changing&saving anything on Wireless - General settings.