Welcome to the Community, donnefoo.
Common issues with printing vouchers can be resolved bey performing some basic print troubleshooting steps.
First, let's try printing a local PDF document saved on your hard drive so we''ll know if the issue is caused by your printer.
I'll leave you with these articles for additional troubleshooting options in resolving different printing issues in QuickBooks Online (QBO):
If none of the steps worked, I suggest contacting our QuickBooks Online (QBO). They have the tools to conduct further investigation so you can print cheque payment vouchers successfully.
As always, feel free to add a post/comment below if you have any other QuickBooks or printing questions. I'll be always here to help you!