Gravity Form Submit Button Custom Image keeps disappearing

I have uploaded an attractive custom image (.gif) "blue reverse" (white on blue backgroud) submit button in the advanced tab for the form settings. It was visible last nite in preview mode, & later after updating in Mozilla, IE, and Safari, and the form tested well and the blue button was visible and functioned.

This morning the button has reverted to plain typed text "submit" without even a box around it in certain browsers, and on other browsers, in has a little "x" on the left to acknowledge a missing image and the word "submit" beside it. The nice "white on blue" submit button is nowhere to be found even though it is still listed as the path under the advanced form settings field for the button. I am usine Empire Theme by Woo Themes, if that helps. Please advise. Thanks.

Hi Kevin

Here's the link to the full page that has the form: http://explanationsunlimited.com/how-can-we-help-you/. The form has a number of fields with conditional logic, so it appears shorter in this link than it actually is. This link shows an example of my attempt at the embedded form in the sidebar, again with the image of the submit button mission: http://explanationsunlimited.com/collect-free-hours/
I look forward to your feedback. Cheers, Evelyn

Evelyn, it looks like you are placing the source in that is referencing your local computer (c: drive). You'll want to upload the image to your WP gallery and then grab the url there to place. The image needs to be hosted on the web.

Screenshot

Hi Rob. Thanks for catching my mistake regarding the local drive. Forgot to upload. As a non-developer/non-coder and fairly new to Gravity Forms, I am finding that there is quite a bit for me to learn. I am sure I will have more questions, and you guys have been so helpful already. Have a great weekend. Evelyn.