Cart adds International Shipping to US address

I have shipping settings for US 48 contiguous states, US Alaska and Hawaii only and Canada. However, the International shipping generates in the cart for US states, rather than regular shipping. Both shipping options display in the cart unless cart total reaches $99 or more, which displays the Free Shipping option and International Shipping. This didn’t used to happen. What am I doing wrong?

https://www.ads-software.com/plugins/woocommerce-table-rate-shipping/