I'm new with upfront builder.
1- I don't know how to build a page or post because the menu "New post" or "new page" does not appear.
2- Sometimes my setting like color, theme font are not saved when i don't activate the theme and i had to make the settings several times
3- I cannot update my activated them with the last version of the theme. I see the changes in Upfront builder but they will not appear on the live site
4- Is there an "Undo" button in Upfront Builder?
Thank you for your help!