Contact Form and Add this tool

Hello I been using the following tool form addthis.com to share the content on all social media but I notice if theres a contact form on the page the Tab does not work it goes directly to the addthis widget instead of following the contact form is there any way to fix this issue?

also try it on the website since is a little tricky - www.palomacondos.com

Start typing Name once you press tab to complete the form it jumps to the Share options.

Thanks if anyone can figure it out.

Lina