Atmosphere crashing when launching the NES/SNES Switch Online app

You should not be on CFW /Atmosphere when trying to go online esp with Nintendy services. Good way to get banned!

 

Then how are you expecting to go online thru NES/SNES online?
Use Retroarch homebrew and get all and more..

 

If you are banned, then the switch can no longer have access to Nintendy services including Nes/Snes Online.....
You can install Retroarch Homebrew, without any online activation/NSO subscription and get nes, snes, n64, sega, gba, etc all for free, Just add your own ROMS...You can find it here :
https://www.sdsetup.com/
A Good read here too:
https://switch.homebrew.guide/index.html
If you need any more help or have questions go to here:
https://gbatemp.net/threads/switch-noob-paradise-ask-questions-here.488277/
Good Luck and Have Fun!

 

Then you must not have been fully (perma) banned...Sometimes Nintendy will temporarily ban you, then lift the ban later, but if your on CFW playing online, odds are good your banned completely now....Best way to check try to go the Nintendo game store on the switch...if you can get there, then not banned, if not, then banned!

 

Obv you didn't cause you could not have been playing Nes/Snes online on banned switch.
All are good for each System you need it for....I suggest getting them all, then test each and decide yourself which is your favorite. When you open a ROM file inside Retroarch, it will pick a core auto for you, or let you select between several core for that Rom.

Can you access the Nintendy eShop still?

 

Actually, depending on where you get the files for NSO's retro stuff you can use them on switches without NSO subscriptions or even banned ones. i know from experience. the method you obtain them likely means a difference, but i obviously can't link the ones i'm using.

 

Do you have a fake account linked to your console?

 

Well, any progress?