How to Set Up 36-Hour Free Trial That Converts to Paid Monthly Subscription Automatically

[dvtz]

I'm trying to implement a 48-hour free trial for a product, but I want to make sure users must enter their PayPal or credit card info before activating the trial.

Here’s exactly what I’m looking to do:

• When the user signs up for the free trial, they are required to enter payment details (PayPal or credit card).

• The trial runs for 48 hours.

• After 48 hours, the trial automatically converts to a $20.99/month recurring subscription unless they cancel.

• If they cancel before 36 hours, they are not charged.

I want this to be as smooth and automated as possible for both the customer and me. Has anyone done something like this with WHMCS?

Do you recommend a specific module or setup to handle this? Ideally, I want to avoid too many custom-coded workarounds.

Any suggestions or links to compatible modules would be really helpful. Thanks in advance!