3ds xl, system version 11.17.0-50u. luma version 13.1.2.
originally i was able to progress through the NNID creation screen but would get this error after trying to actually create/activate the NNID. no email confirmation sent out. trying to create the account through the pretendo website has just been refreshing the page whenever i hit submit, with no emails generated.
i tried the toggle-nintendo-open-eshop-retoggle-pretendo solution and that didn't help. i uninstalled nimbus and reinstalled it from the universal updater (chose the cia version). now i get the error message as soon as i click "nintendo network ID settings", and then it sends me to the sign in screen for my existing nintendo id. no option to create a new one. i tried the eshop trick again once already and it hasn't helped. i've made sure it was back on pretendo. what else can i try?