problem with nested form code

Hi there,
I love this plugin!
However, I have a problem that might be solved with a pro version of Popup Anything plugin, but I want to make sure that would be the solution to my problem.

I use Popup Anything plugin for two main functions:
1) for image popup (no problems there)
2) for image upload (main problem).

I want visitors to be able to upload photos from their phones (or computers) without leaving the current page. That’s where Popup Anything plays the major role! I use User Post Gallery plugin to enable visitors to upload images. I add following code (for User Post Gallery form) in the popup:
[upg-form class=”pure-form pure-form-stacked” title=”Submit to UPG” name=”my_form” ajax=”true”]
[upg-form-tag type=”post_title” title=”Add view no” value=”” placeholder=”view no”]
[upg-form-tag type=”category” title=”Select album” taxonomy=”upg_cate” filter=”image”]
[upg-form-tag type=”article” title=”Add your location (city & country)” placeholder=”Your location (city and country)”]
[upg-form-tag type=”file” title=”Select file”]
[upg-form-tag type=”submit” name=”submit” value=”Submit Now”]
[/upg-form]

It works perfectly when I create one popup per page. However, when I have more than one (different id for each popup), then I get the following error:
Submission failed
Error message: | required-title | |

If I use the code for image upload (User Post Gallery code) more than once per page, it works perfectly.

I guess I am trying to determine the source of the problem, and if Pro version of Popup Anything solves it or there might be a simple (cheaper) solution.
I have attached a link to the page with a problematic popups/uploads.

The page I need help with: [log in to see the link]