Front page not saving my changes

Hello, Here’s my issue: I am making changes to the front page and it is saving on the edit mode only.

However when I am previewing the page, it keeps showing the original page “We are a digital agency”. It is not displaying my latest changes. I have already cleared WP cache, browser cache, tried in incognito. It was working previously some days back, but today I have noticed it’s back to zero.

Can you help? Thanks.