Hello Grant-ample, I hope you are doing well. I wanted to share some information with you regarding integrating your QuickBooks Online account with Medusa.
To integrate your QuickBooks account into Medusa, you will need to contact Medusa's support team as they have the appropriate tools to help you with the integration process.
Moreover, I would like to provide you with an article that you can refer to in the future if you want to integrate an app in QuickBooks: Integrate apps in QuickBooks Online.
Please feel free to reply to this thread if you have other queries on integration or any QuickBooks-related matters. I'll be here to assist you. Have a wonderful day!