If you don’t mind, could you please provide a screenshot of the error you described? If needed, please refer to this Community FAQ for instructions on how to attach a screenshot. Alternatively, you can also drag and drop screenshots to your response if you are not given the option to add attachments.
Just my 2cents'
worth ... I would not bother attempting to activate any loan or mortgage
account for downloading. (Not discussing
LOC or HELOC accounts here which should be treated like credit card accounts)
At least in Quicken
for Windows, an online-connected loan or mortgage account does NOT have a
transaction register. All data shown in the account come from whatever
information the bank downloads to you ... if this process works at all.
As a result of being
connected, the scheduled payment transaction reminder cannot transfer the
amount of principal paid into the (non existent) account register and must use
a category, usually something like Loan:Principal, instead. The category seems
to vary with the Loan Type you selected when creating the loan account in
Quicken Windows 2018+
you can deactivate an online-connected loan account and regain full control
over your transaction register. However,
you should still review the Scheduled Reminder (or Memorized Payee List entry)
associated with the monthly loan payments to ensure they now transfer Principal
to the loan account register and not to a Category.
If you're a Q Mac
user, you should be able to do something similar about setting up and
maintaining an offline mortgage account together with a correctly calculated
Scheduled Transaction Reminder for the monthly payments from your checking
Don't use any of these characters: * ? < > | " : \ / (asterisk, question mark, left and right-angle bracket, pipe, straight quotation marks, colon, BACKSLASH, FORWARD SLASH). Also, don't add the .qdf extension; Quicken does that for you.
After adding accounts, see if you are experiencing the same problems in this test file.