If you got an invite from a brand or a group to connect your profile, then you need to activate your account.
You can activate your account through the invitation email you should have received.
The email should look something like this:
You will be redirected to a sign in page.
If you have created an account log in with your info you used to create your own profile.
If you haven't, select Create a new account under the sign in button.
Use the email address the invite was sent to as your username and create a password.
Your account will automatically be linked to the profile that sent you an invite.
Sign in and welcome to Ocast!