you change the Default Due Date on an Invoice!  Just click on:

1.  Gear, Company Settings

2.  On the left hand side click on Sales Form Entry, and on Terms change the Default Invoice Terms (see pic).

I would really appreciate it if you let me know if that helps, and thanks so much […]

Resolution for 'and on Terms change issue: 'how can I change the default due date on an invoice' available: Yes.

The and on Terms change issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the and on Terms change issue yourself by looking for a resolution described in the article. If it is a complex and on Terms change issue or you are unable to solve the issue, you may contact us by clicking here or by using other and on Terms change support options.

For more information about resolving issues related to and on Terms change in Quickbooks/QBO or to get support for the issue 'how can I change the default due date on an invoice', click the link below: