You can change the order of the blocks by moving them across a page.
Moving blocks on a page
Hover over any block and click on the icon in the top right corner:

In the new window pick a block and move it to the relevant place on the page by clicking on the arrows icon:

Important: you can only move blocks within a single page. To copy a block to another page on your site, see the article Copying a block.
Click on cross icon at the top right corner to get back to the editor:

Publish your site for the changes to appear live.
Moving blocks on a page
Hover over any block and click on the icon in the top right corner:

In the new window pick a block and move it to the relevant place on the page by clicking on the arrows icon:

Important: you can only move blocks within a single page. To copy a block to another page on your site, see the article Copying a block.
Click on cross icon at the top right corner to get back to the editor:

Publish your site for the changes to appear live.
Updated on: 06 / 02 / 2021