If the signal strength of the wifi is weak, that can cause intermittent connection or errors like the “network’s settings are not supported.” Security Type Not Compatible with Nintendo Switch.

Having trouble connecting to the Nintendo Switch eShop servers? Here's what Error Code: 2813-0002 means and what you can do about it.

How to Connect via Ethernet While the Switch does not support an on-board Ethernet Port, it is possible to set up a hard-wired internet connection on your Switch dock.

Both Sony and Nintendo have said they're working on sorting out the PS4 and Switch online problems people are having.