I have ways to remove the vendor name from the address line and the bottom part of the check, @adminzirrith. I'm pleased to share the instructions. 

I'll ensure that you can print your vendor check with the necessary details only will appear.

As an alternative, you have the option to remove the following information from the vendor's profile: 

• First and Last name
• Company Name
• Uncheck the Print on the check as a user display name
• Just leave the Display name field, then save it. 

After that, create a sample check and print it to show what it looks like after doing the workaround. You can also refer to the screenshot below for your reference: 

Further, check out these articles below on how to adjust check alignment and fix some printing issues in QuickBooks: 

• Configure your print settings for printing checks in QuickBooks Online
• Fix QuickBooks Online printing issues on browsers for Windows

I'm just around in the Community if you have more questions about managing vendor transactions or anything else related to QuickBooks. I'll make sure you're able to achieve your goals. Take care and stay safe, adminzirrith.