Can't login as admin, Belkin N750 DB router.

[BaD_AL]

I type the IP to administrate the router over wlan, try to enter the menu so the login appears. So far all OK. But when I've entered the correct key and then "Submit" the login either pop up again when I try to access the menu or it reappears instantly (2.4GHz/5GHz Chrome/Explorer doesn't matter).
Why?

I have the latest firmware.
I have used the reset button (that worked for a while)
I have changed the cables.. left it alone for a day or so.. even tried to talk to it!
Now I'm out of ideas.. anyone got the solution?


Just tried with PC->cable<- Router and it worked once, then same again.. bah

Anyway.. Internet is working for all connected devices.


Internet: 100/100 fiber
Router: Belkin N750 DB (2.4GHz & 5GHz)
Switch: Netgear GS108 Gigabit
NAS: D-link DNS-320 (connected to switch)
Mediaplayer: Boxee Box (connected to switch)

Connected to wlan:
2x Laptop
2x Android Smartphones (yes, tried the login with them too)
1x Ipad 3 (yep..)
1x Ipush (the thingy that makes a stupid TV smart)
2x IPcam

 

[USAFRet]

1. Are you entering the password, or the WiFi key?

2. Many routers are set to not allow administration wirelessly. Connect via an ethernet cable.

 

[BaD_AL]

1. Are you entering the password, or the WiFi key?

2. Many routers are set to not allow administration wirelessly. Connect via an ethernet cable.

Hello
(Hope this where I answer *forum n00b*

1. First the wifi key for the wLAN, then admin password for accessing settings using a browser.

2. Cable & wifi, I've tried both ways, same result.
Now the past few hours it has worked to login and change settings 3 times (and ~60 failed)
It seems like it works best if I change way of connecting to it every time I try. Cable/wifi or typing "//router" instead of IP.. and so on..