Let me share my thoughts as to why you don't see the Company tab in question.
A reason why you don't see the Company tab is due to access rights. If you're not an admin user, and if your master admin didn't provide you admin access, then this tab will be missing from the Account and Settings page. You can either ask your master admin to change it for you or ask them to give you admin access.
If you're the master admin, then please follow these steps:
You can also open a different browser if available, to see if that helps.
Just in case, you can forward this article to your master admin: Give administrator rights to a user. As the name states, you can find the steps on how to change a user's access to the same level as an admin.
I'll be around in case you need further help. Leave a comment below, and I'll get back to you shortly.