Once you login, you will be redirected to 52 Violin Proficiency Exercises Welcome Page.
If you try to login and it says pending, it just means that your account has not yet been authorized. Keep in mind that Violin Exercises is global and time zones around the world may factor in a slight delay in authorization.
Have patience. Most likely, within 24 hours you will be authorized, if not sooner.
If you have any troubles logging in (after allowing time for authorization) please email 52 Violin Proficiency Exercises email@example.com.