I am having issues with the buttons in membership. Example

I am having issues with the buttons in membership.

Example 1

In example 1 I have used the shortcode

[subscriptionbutton subscription="2"] however, instead of a button the viewable object is only a link that says “Subscribe”

Example 2

In example 2 – if you click sign up the pop-up window comes up but there is no way to confirm the purchase. I have tried this with and without the pop-up window. Is there a default button url I can use. Perhaps that is the problem?