I am sorry to say I gave up trying. It finally dawned on me that the "agent" Turbo Tax referred to was their Turbo Tax Agents - who charge TT user to prepared their taxes -.
If I am wrong in this assumption then I am open to any corrections. It certainly would be very helpful if we could prepare our taxes ourselves on Turbo Tax & then have a secure way to send to an expert to confirm our figures and forms.
What I finally wound up doing is opening a free ProtonMail account so that I could encrypt it before sending it to my CPA. This was very easy to accomplish.
