After the price label do not shows up

Hi all, just bought the plugin to use the custom “After the price” label. I set it up on a specific product which has a monthly pricing like “$999 / Month” but my custom added text “/ Month” is not showing up on the frontend single product page neither on the all products page.

I need assistance with this as soon as possible, I have install the WooCommerce Jetpack version 1.0.6 which is the only one I found compatible with my Woocommerce install which is version 2.0.20. Can’t update right now because I have some multiple customizations around there that I need to take care of moving them first.

I guess version 1.0.6 should work also just fine, can’t find why it is not.

https://www.ads-software.com/plugins/woocommerce-jetpack/