You can have your unifi TV ID at your bill statement (can view from your myunifi Apps). For the password, can click on "Forgot Password" at playtv@unifi Apps.
You can also contact unifi Support via https://unifi.com.my/support/contact-us for assistance. They can check your unifi TV ID from the system and reset the password.
Good luck 👍
You can check your unifi TV username on PDF Bil and for the password,download the playTV@unifi and choose Forget Password to create a new unifi TV Login password