Sounds like a cookie from some 3rd party didn't get activated (or was deactivated later)...if that was the price on 12 March. Sometimes, accessing TTX thru a Bank's link, like USAA, or a broker's link, like Fidelity get you extra discount that shows. Some folks with cookie blockers end up losing the discount...or aggressive browser safety setting will lose it (some folks have been having particular problems with the Brave browser blocking stuff, until they shut down that browser's aggressive setting)
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
