Can't connect to Splatoon since today, it worked yesterday though.

[coral nest]

104-2210

[shrewd ruin]

104-2210 (Wii U)

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[frozen hawk]

104-2210:

Very common in titles like Splatoon; simply open System Settings, close it, then restart the software. If the problem persists, delete that game's shared save data, then restart the software. Be careful not to delete users' save data, as this could result in having to start a new save file. If none of these tips remedy the issue, please try again later.

[shrewd ruin]

104-2210 (Wii U)

Support code detected, press to expand information