1st Step : Login to Bsport.
Click on this link : https://backoffice.bsport.io/login/customer
Enter your email adress and password > Click on "Sign-in".
Click on the name of the studio.
2nd Step : Download your invoices.
Once on your profile, click on "Invoice" on the left of your screen.
Select the icon on the right of the invoice to download a PDF version of it.
You can also click on the arrow located on the left to access the detais of the invoice.