I know that this process hasn't been easy for you, Di_zzy.

To protect your personal and company information, QuickBooks Desktop requires passwords for data files to meet specific complexity requirements. The program will prompt you to set up a complex password if your QuickBooks files contain any sensitive/critical info, such as social security numbers, credit card numbers, or employer identification numbers. 

Additionally, users with Credit Card Protection will also need to set up a password. You'll want to make sure to follow the minimum requirements for complex passwords below:

• Between 8-16 characters in length
• At least 1 uppercase character (A-Z, plus all uppercase characters in the Latin-1 Supplement set)
• At least 1 lowercase character (a-z, plus all lowercase characters in the Latin-1 Supplement set)
• At least 1 special character (! " # $ % & ‘ ( ) * + , - . / : ; < = > ? @ [ \ ] ^ { | } ~)
• At least 1 number (0-9)
• Password cannot contain the username or password (case sensitive)
• No spaces

QBDT will also ask you to change your QuickBooks password before the end of the 90 days to assure you don’t forget it or to keep your data safe from potential cyber threats. Plus, you will get a reminder on the expiration date too. 

Once you're all set up and ready, you can refer to this link to learn how to sign in to your company file without having to enter a username and password every time: Stay logged in to QuickBooks company file and sign in without entering your password. 

Lastly, I'm adding this article to know what to do if you lost or forgot your password: Reset your password for QuickBooks Desktop.

The Community is always here for you, so don't hesitate to visit us again if you have further questions about account management. Have a great rest of the day!