How courses work
Your access link is in My courses the moment payment succeeds.
Courses are recorded by the shop that sells them. As soon as payment succeeds, the access link appears on your order and under My courses in your account.
Each listing shows the level, language, number of lessons, total running time and what's included, and often a preview. Materials a course recommends link to their listings.
If a course doesn't work for you, message the shop, and open a case from the order if you can't sort it out together.