Hope you are doing well, and I understand the frustration. That message reads pretty alarming out of context.
A few things would help confirm and fix this: are you using a VPN or proxy service right now, even one you might have running in the background for another reason? What does your Adobe account's billing address and country setting show when you check it at https://adobe.ly/4hl6NSO? And has this Adobe account, or the payment method on it, ever been associated with a different country, for example, if you signed up while traveling, or if a card on file has a billing address outside the US?
Any of those can cause Adobe's system to misjudge your location and incorrectly apply a regional restriction meant for somewhere else entirely.
Worth trying right away: fully disable any VPN or proxy, confirm your billing address is set correctly to a US address, then try again.
Let us know what you find on those, especially the VPN question, that's the most common cause of this specific message showing up somewhere it shouldn't.
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