After you reset your BOSS Wara Wara Plaza Tasks (in the Aroma Plugin Menu in the Inkay folder), wait around 40 seconds for the communities and posts to appear.

for me i left my wii u on the user select screen for like an hour or so and it started working for me

I also had done all the plug in stuff but letting it sit on the aforementioned screen is what let it work for me

you only had to wait 40 seconds...

it didnt work for me even after waiting for a long while, then someone told me to start and close a game and that made it work