Does QB Online integrate or interface with my mortgage company

Welcome to the Community, @userkp-do-construct.

Let me help and provide information about integrating with a mortgage company in QuickBooks Online (QBO).

If you mean about setting up a loan, you can set up loans in your books by creating liability accounts to track what's owed.

Here's how:

1. In the left navigation bar, go to Accounting, then Chart of Accounts.
2. Click your New button.
3. From the Account Type ▼ drop-down list, choose Long-Term Liabilities. If it's planned to be paid off by the end of the current fiscal year, pick Other Current Liabilities instead.
4. In your Detail Type ▼ drop-down, choose Notes Payable.
5. Give the account a name.
6. In the Balance field, enter the amount that's currently in your account.
7. Determine the as of date. Enter today's date if you want to start tracking immediately.
8. Select Save and Close.

You may also refer to this article to proceed to step 2, so you can record the money you got from the loan for more detailed steps: Set up a loan in QuickBooks Online.

However, if you mean about setting up a company, here's how to set up as company.

1. Go to the Gear Icon.
2. Select the Account and Settings under your company section.
3. Go to Company and select Company type.
4. Select the field beside the Industry.
5. Type Mortgage and nonmortgage loan brokers.
6. Click Save.

In addition, if you have already an existing program for your mortgage company then you want to integrate it. It will require contacting the  Intuit Developer.

Moreover, you can check this article when you may want to change your user ID, or password for QBO:  Update or change your Intuit Account sign-in information.

Please let me know if you have further concerns about mortgages or setting up a company and loans. We're always here to help you out.