Problem to update home page

Hello
I’m having trouble to update the home page of my site.
When I try to make changes in the home page, the message appears that the updates have been saved, but everything stays as it was before.
At times the changes are saved correctly. But it usually does not work.
All of others pages is working fine. The problem is only at the home page.
Can you help me understand what’s going on and solve the problem?
my site is travelwp.estacaovloresta.com.br
I already sent the access data to solve another problem. If you need, I can resubmit.
Thank you.