My site has had some issues in updating most meta descriptions & page titles (actually, issues updating any description or title). While chasing a rabbit hole, I realized I don't have WordPress set up correctly to trouble shoot correctly using the help of these forums because I can't access the Yoast plugin because I can't access any plugins at all.
Is this a problem with my access level or how WP is operating?
I'm using WP 5.0.3
This is what my nav menu looks like: