In app purchases

I am testing an app with in app subscription purchases, monthly and yearly.

I have my in-channel products set up and their status is 'Approved'. I have selected the private channel name in the Channels field when editing the in-channel product.

However, none of the subscriptions are available for purchase in my private channel.

How long does it take for the in-channel products to be available to my channel? Is there any way to test that the channel is pulling down the store information correctly?

Thanks!