Thanks for coming back to us Danielwalsh, and our sincere condolences for your loss.
This may be a case of needing to transfer the E-Mail accounts from your Father's account to the new account we've created under your name
When doing a transfer of E-Mail addresses from a former account to a new account, this will move over all E-Mail accounts, but will overwrite any E-Mail addresses you've created on the new account
I'll seek to take some details from you via our private messaging function and get this sorted for you as soon as we possibly can
Kindest regards,
David_Bn