A Success Formula account uses an email address and a password. There is no sign-in with Google or Facebook.
Use the address you booked under. If you do not have a password for it yet, or you have forgotten it, use the "Forgot Password?" link on the sign-in screen and we will send you instructions to set one.
If you need a hand, write to us: info@successformula.nl or +31 6 18930535

Your bookings and the slides for every session you have booked all live in this account, so it is worth getting back into rather than making a new one.

If you think you have ended up with two accounts under the same address, tell us and we will merge them for you.