If you do not have an account yet, click on Sing up in the lower-left corner of the Login page. You can use the quick registration via Google or Facebook or sign up directly in Tabidoo using an e-mail address.
IMPORTANT: Make sure you confirm the registration through your e-mail.
If you can only see your own data in Tabidoo, but you cannot display the data someone else shared with you, you probably have not confirmed your e-mail.
Now you can login to Tabidoo. All you need to do is go to the tabidoo.cloud home page and just click on the Login button in the upper-right corner of the screen and enjoy Tabidoo to the fullest.