Hey there, lauren4.
I'd be glad to help you get your printing back to normal.
An outdated Adobe version can lead to a problem when printing in QuickBooks Online. You can check this article for detailed information about Downloading Acrobat Reader.
Once you have the most current version, let's go to your QuickBooks Online company and set your printing alignment.
For your reference, check out this article: https://help.quickbooks.intuit.com/en_US/kb/set-up-alignment-print-checks-cheques/000002553_en_US:SA....
This should get everything back in working order. Please let me know if you have any other questions. Have a good one.