I am a new QuickBooks Plus user and have just downloaded the quickbooks mobile app, but it won't let me log on?

Thank you for using QuickBooks Online, michael-dely7.

I'd be glad to help you with logging in to your QuickBooks using the mobile app. 

It could be that you've incorrectly entered your login credentials. The email address and password are case sensitive. You may want to retype the information and make sure it's correct. If you're still unable to log in, you may consider resetting your password. I'll show you how:

1. From the sign-in page, select I forgot my user ID or Password.
2. Enter your email address or phone number and select Continue.
3. Follow the on-screen instructions.

 You'll then receive an email with your User ID. To give you additional information, please check this article: Get help if you can't sign in to your account.

I also encourage visiting our QuickBooks Community page to find tips and articles that will help you with navigating QuickBooks.

If there's anything else I can do to help, please tag me in a comment section. I'll be around to assist you.