How can I change the thumbnail on my form , and how do i get rid of the jot for banner on the bottom of my page

Hi there,

I'm quite not sure what thumbnail are you referring to. Kindly share with us a screenshot of that thumbnail so we can advise.

Guide: https://www.jotform.com/help/438-how-to-post-screenshots-to-our-support-forum

With regards to removing the JotForm branding at the bottom of your form, that option is only available to paid users.

So you will need to upgrade your account to any paid plans that JotForm currently offers. You may check our pricing page if interested. https://www.jotform.com/pricing/

Here's a guide on how to upgrade your account: https://www.jotform.com/help/331-how-to-upgrade-my-account

Once upgraded, the option to remove the branding can be found on your account's setting.

I hope this helps. Let us know if you need any further assistance.