Hello everyone, happy to be here. First of all, I want to state that this will be a little long explanation but the reason belongs to the fact that I did A LOT of troubleshooting before joining and asking here. At the same time I’m kinda techie and used to these soft procedures, so unless I made a very big oopsie, I feel like I’m hopeless beyond what I looked, understood and tried on my own.
Main problem (pic related): Internet Connection Error 51330/1/2. Yes I know, this means WLAN1-2-3 problems with connection between my Wii and my router.
First of all, my Wii is a PAL one with updated 4.3 firmware. YES, it does find my wifi connection when looking for an access point. I have a double connection from the router with modern 5Ghz and a secondary one with 2.4Ghz. It can also open “GUEST” ones for both. Going on, I’m aware that the Wii is a 2006 old system and can get 2.4Ghz wifi only (when not being picky), but it still can recognize the WPA-2(AES) key, contrary to DS which sees only WEP as an example. Moreover, YES, I always double check my password and silly slips like these are not the problem here. I tried too many times to just fall for those, I literally learned by heart the DNS numbers for Wiimmfi and Riiconnect24. Also, I changed the settings to the so-called “legacy frequencies” with older standards like 802.11 b/g (my router settings luckily allow that), changed the channel to automode (mostly it goes 1 or 11) and have no filters on (like MAC).
It STILL refuses to connect.

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), but I would still sort things out with this.
. I still feel kind bummed about this incompatibility with the wifi reception but at least there's another chance and way to get around of it.