The agent is not answering
Work through these checks in order.
Forwarding is on and points to your TensifyX number. Check it with your carrier’s check code or settings.
You are testing from a different phone to the one being forwarded.
Your plan’s minutes are not used up with additional minutes switched off, and you have not reached your monthly limit.
If you are on the trial, it has not ended and its minutes are not used up.
You are within your plan’s calls at once; calls beyond that may not be answered.