WhatsApp Chat opens new page when I click send message??

Hi Chris,

At present when I type a message and click the send button it opens a what's app page asking me if I want to send the message, this is obviously incorrect.

Yes, that's the correct flow and it's the standard method provides by Whatsapp API, they don't provide any other method so far.
If the user have Whatsapp app/desktop app installed on their computer/device, then the app will be opened soon after they click / tap the send button. If they don't have whatsapp app installed, then the web version of whatsapp will be opened

I also noticed that when I roll over the chat widget an extra scroll bar appears on the browser. You help much appreciated.

I'm unable to spot this issue on the demo site, can you elaborate it?

So essentially this is not a chat in the real sense but a link that opens software on your machine which doesn't seem to be working even though I have the app installed on my PC, it just opens up a new tab with the web version on.

Yes, unfortunately whatsapp only provides that method to communicate with their platform, and I think to build a standalone web chat system for whatsapp is not possible at the moment because of limitation of provided api.
Regarding it's opened up a new tab of web version instead of the app, it's basically because whatsapp:// protocol is not set on your computer and unfortunately this is beyond of our control. I'm assuming you were testing it with Windows OS, which is indeed does work like that (MacOS and smartphone ios and android should open whatsapp app automatically), and I don't know why Windows version of Whatsapp app doesn't set whatsapp:// protocol when installing the app, Maybe they will fix this issue in the future app release.

The extra scroll bar on the browser on rollover only seems to be happening on our website, it's fine on your demo site.

It's probably just a css conflict with your template css. Please share your website url so I can have a look on it.

I do feel disappointed that it seems to be advertised as an in-page chat with text field etc that would work as a regular chat and in fact does not. It in fact only acts as a link.

Really sorry to disappoint you, but we already provide a demo site so user can test it before downloading/purchasing. Also the flow we provide in the module is a common flow that you will find in other whatsapp joomla extensions and also for wordpress widget.