I can find and open TAD-T in the Hebrew Texts, but where is TAD-E?

You will need to find it in the Semitic Studies section of the Library and open it. Then it will appear as a Reference Tool which can be viewed in parallel with the TAD-T. Until opened, Accordance does not “know” to which corpus it belongs.

Note: This occurs with Notes/Tools of all non-Biblical texts like Josephus, Apostolic Fathers, Inscriptions etc.