Nintendo 2DS unable to connect to the Internet?

I got a Nintendo 2DS and tried to connect it to the W-LAN (access point). However, every time I'm told, "Access point security settings are not supported by the Nintendo DS. Visit support.nintendo.com for more help." (To see in the photo) I tried to contact the support, but they seemed to have no idea.

Can someone help me please?

Try the router for 2 minutes to disconnect from the network, maybe it works

Nintendo Wi-Fi was shut down years ago. That you can't play online with ds play anymore

try to connect to the Nintendo network because you can still play 3ds games and buy things in the shop