Another WordPress Classifieds Plugin (AWPCP) giving below error

When I dont add/upload the picture and click on finish

This is somewhat embarrassing, isn’t it?
It seems we can’t find what you’re looking for. Perhaps searching, or one of the links below, can help.

When I select the image and click on add/upload the picture

Although your ad has been submitted, there was a problem encountered while attempting to email your ad details to the email address you provided.

Sample of your ad
Sorry, that ad is no longer valid. Try browsing ads or searching for one instead.

In my testing environment non admin users post add and they did not go in pending

Admin soes not have the ability to approve and the non admin users are able to publish the add without admin approval