Disappearing buttons – Please help

On my site I have a button that links to a sign up form for our wellness membership.

The button is not showing up on the website, or rather its shows up for a second, then disappears, but only the outline of it. If you refresh the page, it shows up for a second.

https://www.mamobilemassage.com/membership/

the button is above the words, “Download Membership Form”

Same thing happens for the intake form on the other page. The button is not visible.

https://www.mamobilemassage.com/appointments/

it should be below the words,”Please fill out the Massage Intake Form Online.”

What could be the issue, when I have checked the forums, everyone has problems, but no solutions.

I tried to upgrade everything, only plugin not upgraded is google xxl, and it wont let it update, I dont know why.