If you received an invitation to a Fygaro account this tutorial will help you step by step!
When someone send you an invitation to be part of their invoicing profile, you will receive an email that looks like this:
Click on "join" and follow the on screen instructions
Choose between "New Account" or "I Have an Account" to either create a new user or link the invitation to an existing one.
Complete the required fields and then click on "Create an Account". Now you can proceed to sing in at www.fygaro.com