one of the issues is you have a Logo in your Site Identity Retina Logo that is not loading, remove that logo or replace it with another image ( if it the field is empty ).
Simplest fix is to add a more Mobile Friendly logo to your Mobile Header.
The delay in it being loaded is causing the reflow. If you added a less wide logo then the issue would pass.
What other issues ? If you mean the CLS elements then they are all related, Page Speed insights CLS shows you the elements being affected by CLS – NOT the cause of CLS. So if your logo loads late, it forces the nav height to expand, which in turn forces the content below it to shift.