This happens becuase of token structure update.
Solution :
1. Go to WP admin – Vibebp – Settings.
2. Save the General settings , optionally change the security Client ID ( its a random alpha numberic string, special cahracters allowed except # hash )
3. Save the login settings.
Most likely you were using infinite tokens which is stored in user’s browsers and never refreshed. A good practice is to set tokens with expiry that means :
A token expiry of 30 minutes would mean that when the user remains inactive, like switches the browser tab or closes the browser. The user will remain logged in for 30 minutes. Post 30 minutes the token expires and the user has to re-login
While when the student is active on the site the token is automatially refreshed based on the token expiry you;ve set.
We have also added a “way” to force logout all the students from the site when you change the Client ID. That nullifies all the saved tokens and the users are required to force login to the system.