Oh I’m glad someone else posted this as it is no longer a just me issue. I might help clarify their situation.
I started to troubleshoot this over the last few hours.
I’m using the SSSL connect method and I’m getting an error of 104-2210 when I try to get online for a battle. (I am also not getting the news at start showing my system is not on the server). Any information I’ve found regarding this error only refers to if you are connected via a hacked system and running inkay. Taking a stab at it I justed deleted my shared data for Splatoon and restarted the game and no luck.
I’ve also checked my inet connection by doing a test and it is saying I am connecting to the network (re-entered the DNS codes as a just in case) before I deleted the shared data.
I also investigated to see what my NAT type is as referenced in this post [Guide] Detecting your NAT type on Wii U and 3DS consoles . Which is giving me a code of 120-00 marking me as a NAT type B.
I haven’t signed on in awhile, but I was playing Splatoon at least back in the fall through SSSL so I had it working in the past. Just was itching to play a couple maps. So I will appreciate any help.