I can't play super mario bros 35 on the switch?

I have a Nintendo Switch and I also have a Nintendo Switch online subscription. I would love to play super Mario Bros 35 but it just says that I bought it. But I can't play it, so I can't download it, and it's not on my main menu either. Could someone please tell me how I can change this?

Go to your account (click on tom nook) and then go to download again.

If it is not there, try to restart your switch and try to download it again.