I ended up hiring a tax attorney to register a POA and response the FTB notice. After about 3 weeks the FTB responded by email to both registered POAs (myself and the attorney I hired) stating that the POA had been received. After about a month the FTB sent a letter to my father's home address stating that based on the information provided, they will take no further action at this time.
I have verified that all of my Fathers accounts now have the same mailing and home addresses. I already had e-delivery specified when available. One of the reasons I got into this mess is that some institutions don't provide e-delivery options. Case in point is Ally bank. They do not allow e-delivery or web downloading of 1099 forms for "trust" accounts. Maddening.
