Let me clarify things out for you. QuickBooks Online has a different login page. Therefore, you're unable to see your Self-Employed (QBSE) and TurboTax account even if the login credentials are the same.
In QuickBooks Online (QBO), you have the option to select the company you want to open when you have multiple accounts. See the attached screenshot below for your visual reference.
I'm having trouble syncing my Quickbooks account with Quickbooks Self-Employed and TurboTax, even though I'm using the same login information for all of the applications.
I'll make sure that you can get your transactions entered through your mobile app into your QuickBooks Self-Employed account.
You can try using a different browser in accessing your QBSE account to further isolate the issue. It could be that the one you're currently working on has a temporary problem with QuickBooks Online. As of now, these are our supported browsers:
Google Chrome, press CTRL+ Shift + N
Mozilla Firefox: press CTRL+ Shift + P
Safari: press Command + Shift + N
However, if the issue still persists, I'd recommend getting in touch with our QBSE technical support. This way, we'll be able to pull up your account in a safe environment and then run a series of tests to rectify the issue. Here's how to connect with us:
Enter or say “Talk to a human.”
Choose a way to connect with us:
Post a question and get answers from tax specialists and other customers like you.
Start a chat with a support expert.
Get a callback from the next available expert
In case you need help with adding bank transactions in the system or entering income and expenses manually, I've got these articles that you can visit: