Hey...thanks for the quick reply!
I'm in Canada, I did a Factory reset when I first setup the router, but I did not do it after the firmware update. I did the update before I started configuring the router though.
I have changed the SSID name (for both 2.4 and 5 Ghz bands)
on the 2.4 Ghz im using Mixed 802.11n, 802.11g and 802.11b
on the 5Ghz i have Mixed 802.11a and 802.11n
channel width is set to 20/40 Mhz (auto)
Security is WPA-Personal for both
There are several other devices conneced, an Xbox, a 2nd phone, laptop, and 2 dlink cloud cameras, all other devices seem fine, have no issues with them
There is a cordless phone in the house, I can try turning it off.
One other wireless router shows up in the area, assuming a neighbor. It has a very weak signal from my house.
The WMM Enable mode is enabled, but the option is greyed out, I cannot change it
The phone is a Galaxy infuse 4G (couple years old), Im not too concerned that one, I did read it was an ongoing issue. Just not too sure whats up with the DS. The Nintendo uses WPA and I can connect sometimes. I was messing around with it this morning and it would not connect at all, even though my other devices were online and working fine. I rebooted the router, and the Nintendo connected successfully, it will most likely lose connection again by the time i get home though. I still get the unwelcomed user messages from the mydlink app for that device though. What determines what an unwelcomed user is? I setup the device myself, added it to my network, why would it be considered an unwelcome user?
I will try some of your suggestions and report back with the results.
Thanks again for the reply, much appreciated