No sales tax on invoices
"TAX", "NON", and "Custom Sales Tax" options are grayed out and all I have is an "OUT_OF_SCOPE" option for syncing tax rates with my MSP program.
In QuickBooks Online, you can turn on the sales tax in the company settings. In your case, since you're using MSP program, I recommending reaching out to our Intuit Developers. They can give you the steps how to resolve this "Out of Scop" error.
To reach our developer's support site, please follow these steps: