You can subscribe to a Plan anytime during your trial or after.  If you don’t choose a plan at the end of your month long trial, you will be downgraded to the post-trial free plan which allows only 10 peer connections per month and does not allow use of either the TURN or SFU/MCU Servers.

Other articles you may be interested in: What if I need more time than 30-days to try Temasys?| What happens when my free 30-day trial expires?| How do I subscribe to a Paid Account on the Temasys Console?|