Just so you know, I was able to dump Splatoon, my save data, and my profile onto cemu and it did not give me the error. It was just laggy, probably because of emulator compatibility issues with Splatoon.

Juxt works fine on my wii u but not online games.

I found the fix. Download nimble.rpx on github, move the file to your modded sd card with the directory wiiu>environments>aroma>modules>setup, put your sd card back into the wii u, and set the DNS settings to be like unmodded pretendo (lookup the numbers on the pretendo website).

you dont need the custom dns bro