HOW TO INSERT PUBLIC KEY

Hi @techy4m, apologies for the late response. It seems Sprout Invoices made an update to their main plugin which rendered this one unusable. We will be updating shortly but in the meantime, please use version 17 of the Sprout Invoices plugin at https://drive.google.com/file/d/1Gn-x3n8Wa59W3u_PuGBB76dNZDfGyLj6/view?usp=sharing

Okay , does it work for the free version of sprout invoice

Hello there, we have now updated the plugin and you should see the option now