Changing Dashboard

I hired a website developer to design a website for me. He created it in WordPress, then gave me a username and login so that I could make updates to my blog. One of the pages I wanted included on my website is an “About me” page, which he never did. Although the developer promised ongoing support and updates to my page, he has been unresponsive for the past month. I tried to add the page myself but my dashboard does not have a “Settings” or “Appearance” tab so I am unable to do so. Also, I don’t have a plugins tab so I am having trouble adding google analytics to my page. I contacted him and asked to change my dashboard so I could just make the changes myself but again, he is not responding to me.

Is there any way I can change these things without being the Administrator for the website? Any help would be greatly appreciated!