Hello, Jamie. 

Both programs are different, but I do agree that an important missing feature in a program can be frustrating. That said, I'll share some information on how you can print your register in QuickBooks Online. 

To clarify, are you trying to print the check register as what the original poster had asked? If that's the case, you'll want to go to your account's register page and print it from there. Here's how: 

1. Go to Accounting, then the Chart of Accounts tab.
2. Find the bank account, then click the View register link.
3. On the register page, click the Funnel icon to set the date range, transaction types and the like.
4. Click Apply.
5. Hit the print icon at the top-right part of the register page. 

Though if you want a more detailed view, the Transaction List with Splits report can work. Take note that this report is available in QuickBooks Essentials, Plus or Advanced versions. 

To pull up the report: 

1. Go to the Reports menu.
2. Type "Transaction List with Splits" in the search box, then select the result.
3. Click the Print icon.

If you need to customize it, you can check this article for a guide: Customize reports in QuickBooks Online.

Need to add and categorize your bank transactions? I'll add this article in case you need help: Categorize and match online bank transactions in QuickBooks Online. 

I'll hear out and address your other thoughts and concerns about QuickBooks Online. Reply here or create a new thread, and I'll be right there with you.