Compatibility with Variable Subscription

The plugin worked great with the simple product.

But can’t find the Custom Credit Field for variable products. Is it not compatible with subscription products or variable products?

Also, the shortcode for the add-to-cart link for the credit bundle doesn’t work, i.e it does not add the id to the url.

For example:the shortcode [credit_bundle_link id=’22162′ text=’Add to Cart’ redirect=’cart’] (… copied from Credits Sample screen) will skip the id in the url.