If you are using a Pro account type and you are receiving a notification that your meeting will end in x amount of minutes(timing out) you may not be logged in with the email that is associated with your Pro account.
Please open up your zoom client and log out and then log in with your email that is associated with your Pro account.
If you are logging in with the correct address, you will need to contact your administrator to be assigned a paid license.
Note: If you are a Licensed user and join a meeting and the meeting is hosted by a Basic user. The meeting will have a 40-minute restriction.