pages not updating

I am unable to make modifications on my webpages. I am using goodlayers page builder with Infinite theme.
I make modicifications on any page, then update the page (I have all the green lights with messages saying my page updated successfully). And then when I check online, the modifciations have not been done. And if I go back to edit again the page on wordpress, the modifications made earlier disappeared.
Any idea of what is going wrong>