Welcome to the Community space, @Electronic concepts nc.
The QuickBooks Online (QBO) Lite version is currently only accessible via a web browser and is not supported by the QuickBooks mobile app. This is why you are encountering an error when attempting to log in on your phone.
If you need mobile mileage tracking and invoicing, you don't necessarily need the most expensive version. The QBO Solopreneur and Simple Start plans are more affordable choices that meet your needs for mileage tracking and invoicing on the go.
The Solopreneur plan is ideal for individuals (solopreneurs) and includes features like automatic GPS for mileage tracking, basic professional invoicing, and optimized tax preparation for Schedule C.
The Simple Start plan, on the other hand, is better for growing small businesses. It offers automatic mileage tracking, customizable invoices, a full Chart of Accounts, and allows you to invite your accountant to your books for free.
You can explore the comparison of features between the Solopreneur and Simple Start plans to determine which one best fits your business needs.
If you want to stick with your current plan, you can manage your mileage and continue with other QuickBooks tasks through a mobile or desktop web browser.
If you have any additional questions, please feel free to revisit this thread.