Checked Database and Settings Again
As you know, when someone registers in Power Store, they select the state by name, for example in this case, Tennessee. When entering the tax code for this state, the choice is TN.
I checked the database for all the test registrants using Tennessee and it is inserted into the database as TN, so when going through check out, the tax rate should be picked up.
I also looked at the total amount for shipping & handling to see if the tax was added into the total and it is not.
I also put a product in the store with no shipping and handling to see if it picks it up and it doesn't, so this is all the troubleshooting I know how to do on this end.
Please advise as soon as you can. I am trying to take the site live as soon as I get this resolved.