Yes, you can access both with Facebook and with email and password
If you have made the first registration with email and password, you can connect later with Facebook directly from your personal account.
To add the access mode via Facebook, once logged in:
- If you are browsing with a computer, hover over the photo of your profile or your avatar icon to open the personal menu, then click on "Manage account".
- If you are using a mobile device or tablet, click on your profile picture or your avatar icon to open the personal menu, then click on "Manage Account".
Scroll down to the "Connect your Facebook account" section, then click on "Connect Facebook" and a Facebook screen will open in which you enter your login details to Facebook.
At your next access you can decide whether to log in with Facebook or with email and password.