Realtyspace - Real estate WordPress Theme - Email Attach option not available after purchase

I purchased, the realtyspace theme. But after the purchase, i noticed that the email attachment chat plugin, which is shown in the live preview is not included with my purchase. I contacted the and they replied " This section is a plugin that is part of our support system provider. But you can try to use another similar to this plugin. As we use HelpScout as our support system, they provide this plugin so we can integrate it on our websites. There are a lot of different plugins of this kind. You can try to install a few of them and choose one that fits you more." The template live preview is quite misleading and in my opinion, they cheated me.