I just registered but I can’t access my profile. Why is that?

If you have just registered and cannot access your profile, you probably have not confirmed your activation via the link you received by email when you registered. If you cannot find the activation email, check your SPAM folder or other folders such as Promotions or Social (Gmail in particular applies this type of filter).
Look for the email with the subject line: Activate your account. Sender: info@toget4u.com.
Inside, there is a link to click on. If it is not clickable (due to filters in your mailbox), copy it correctly and paste it into a browser page, and the profile will be activated.