Ghostn review for AfterShip Referral & Affiliate

This app used to be simple and did what it needed to do even at the free version, but as I was trying to add more affiliates after a change was made in the app I can't use it anymore. I can't add any new affiliates because there's literally no way to generate a code for them. The button to generate a code is gone and the only option there is to send an invite email, but when the email is sent there's nothing that happens and there's no button in the email for the affiliate to join or generate a code. I've wasted a lot of time trying to fix this and contact support. The support is also very slow to non-existent. I've had the app for over half a year and the contact support button has never done anything. I've tried to reach out through email on the Shopify side of things and also by emailing them. I didn't get a response. I've ultimately lost sales so I'll be using a different app.