I am using free trail on https://vidyo.io/ so if i will pay them then my token will be expired or not ?strong text
A token is used to authenticate entry into a room. When you create one, there is an expiration time that is set. Once that expiration time has passed, then that token is no longer valid.
Of course if your trial promo minutes have expired, then you will need to subscribe to the Vidyo.io service in order to generate valid tokens.