Hi @bryce-langford19,
QuickBooks Self-Employed (QBSE) mobile app is always synced with QBSE on the web.
It could be that we've logged in to a different account or company, this is why we don't see any data syncing. You may want to check if this is the case.
I'm including this article, you can check about QBSE Overview to learn additional information.
To learn more about the invoicing feature in QBSE, feel free to check out this article: What's new with QuickBooks Self-Employed Invoicing?
Visit the Community if you have other concerns. We're here to help you.