I appreciate you for sharing this matter in the Community forum, @ElCoyote. To successfully reconcile your account, it's important to specify which account the amount pertains to. Let me clarify things to ensure a smooth reconciliation process.
You're on the right track by entering the beginning balance, ending balance, and leave the service charges at zero. However, since you've entered an amount for interest, it is essential for accurate financial reporting that you specify which account this interest amount applies to, whether it should be categorized under an Expense account or an Income account.

Once you have completed the process in QBDT, it will automatically generate a comprehensive reconciliation report for that session. You can also check previous record of your activities, summarizing the key details and adjustments made during the process. To view this, check this article: Get reports for previous reconciliations in QuickBooks Desktop.
I would be glad to hear about your progress after you add the specific account. However, if you have any additional questions or further assistance, please feel free to click the Reply button. We are here to support you whenever you need help.