iTunesConnect sign in trouble
If your Apple ID works to log you into iTunes Connect and you lack some authorities on your primary Apple ID - here are the things I would do in order:


Log out and then open a private browsing / incognito window and then log back in without any pesky cookies or other history.
Go to Agreements, Tax, and Banking and verify that you have two valid Master Agreements that are both effective and not expired and then click done.
Go to Users and Roles and click on the AppleID you are using.
Go to Roles and verify that the Legal and Admin check boxes are grey and selected. 
Repeat the above step for any additional AppleID that are associated with your account to verify the proper roles for each (if you have secondary accounts).
If all else fails, go to Resources and Help and click the Contact Us to request one-on-one help with your specific account since you will be unlikely to fix whatever is wrong at that point yourself on iTunes Connect since it would be a server side data issue and/or that you haven't accepted the required legal agreements during the sign up and activation process.