Hello,
Don’t update WP to 5.8 version. 8.0.1 theme version does not support it. We’ll release new update that will be compatible with the 5.8.
1), 2), 3), 4) You did not replace all the URLs from production to staging in the DB and your site loads form from the production site. But your server blocks this font. So, contact your hosting provider and unblock fonts https://prnt.sc/1eb4y6t
This issue is related to server settings.
5) https://prnt.sc/1ebjb7p – decrease bottom margin
6) https://prnt.sc/1ebjoq2 – this element was created with 2 columns with the image in one and text in other. Do you want to center the text inside the column where it’s placed?
Regards