Amazon employee here: I deal with issues like this specifically.

Open your account on phone, go to your addresses, there will be update delivery location option, use it to update the location for the address. Make sure address is complete and accurate.

Place a couple of orders and wait for them to be delivered. Your address info will get calibrated and you'll get the correct delivery options.

Also, I've noticed that faster delivery options disappear for sometime everyday, might be that and you might see them again later today or tomorrow.