The store.420nurses.com and 420nurses.com use different logins.
If you created your login at store.420nurses.com you will need to create a login to use 420nurses.com
Store or Affiliate Login
You can Login to the store or affiliate program at  https://store.420nurses.com/customer/account/login/
If you have not sign up to the store https://store.420nurses.com/customer/account/create/
If you sign up to the store you will Automatically have access to the Affiliate program.
420nurses.com Login
You can login using your 420nurses login at  https://420nurses.com/user/login/
If you don't have a login you can create a free login at https://420nurses.com/user/register/