On the Design Template tab of your campaign, there's an option to create a lead capture page and a share page. 

Both of these need to be created during campaign creation for the campaign to work properly. It's not possible to only use one without creating the other, so it's advised to have both before launching your campaign whether you're integrating it on your website as a widget/HTML form or whether you're using an UpViral-hosted landing page template.

Here are samples of campaign setups that are not advised:

(Share Page Only)

Resulting error: the campaign will say it's not running because there's no lead capture page made.

(Lead Capture Page Only)

Resulting error: clicking on the call-to-action button will only reload the same lead capture page

Here's a sample of a campaign set up that's advised:

(Both Lead Capture Page and Share Page Created)

How to get your support tickets resolved faster
Statistics have shown us that the more you tell us when you report an issue, the faster we solve that ticket. So...
1 - If you have screengrabs, please include them. A picture is worth a thousand words.
2 - If you have recorded a video showing the issue you're having, please include that as well. A video is worth a million words.
We recommend a free service called Loom for creating these videos. (this is a link to https://www.useloom.com/)
3 - To speed up ticket resolution, follow these useful tips How to Write the Perfect Support Ticket (That Gets Results Fast)