Hi heyanctil,
Thanks for joining the Community. Dealing with missing transactions isn't the outcome I'd like for you to have. QuickBooks is designed to be an easy-to-use program and I'd like to help make sure you experience this benefit among others.
When there are missing transactions on the account, I recommend manually uploading them so your banking is up-to-date in QuickBooks. If you'd like to investigate why the transactions are missing, I recommend contacting our phone support team so they can share your screen and assist you further. Otherwise, manually adding the transactions in question is the best remedy to this issue. Feel free to check out this helpful article here as it shows you how to upload the missing transactions.
I encourage you to try out the steps in the article and let me know if you have further questions. I'm here to help you get ahead with your work. Otherwise, I wish you a great rest of the week.