Hello@@User17538765037821504580
Welcome to the LastPass Community.
We apologize in advance for the issues you have been experiencing using your LastPass account. You have a free account at this time. If you are trying to join any other account, you must delete your free account first (https://lastpass.com/delete_account.php)
Once you do that, please have the admin of the account you plan on being a part of to send you another invite and this time it will work. If this is not the issue then let us know and we will follow up with you. Please let us know if there is something else we can do for you.
Greetings!
Heyner | Customer Care