It's nice to have you in the Community about the Sales Tax feature.
To start, you'll need to set the company’s accounting method to Accrual before activating.
Once done, you're now ready to switch back to Automated Sales Tax. Here’s an article with detailed instructions about the process: Switch to Automated Sales Tax.
If you need further assistance with the steps, you can always contact out Customer Care support. They have additional tools to pull up your account and do a remote session.
To contact us, here's how:
For future references, I'm attaching some articles that you may find helpful:
Please do let me know if you have any other sales tax concerns by adding a comment below. It's my pleasure to help you!