Pause audible subscription

You cannot pause an Audible subscription if you are subscribed through Apple. You can only pause if subscribed directly with Audible.

You can cancel the subscription through Apple if you subscribed through Apple. See: If you want to cancel a subscription from Apple - Apple Support

Also see the following excerpt from Audible help: https://help.audible.com/s/article/pause-your-membership?language=en_US

Note: Memberships billed through Google Play or the Apple App Store aren’t eligible for pause. You can manage your membership anytime through your Google Play or App Store settings.