Using GP 3.0.1, GP Premium 1.12.2, WordPress 5.5.1, WooCommerce 4.5.2. Disabled all plugins other than WC and GPP. Cleared cache.
I have two shipping options (Local Pickup for Oklahoma only and Flat Rate for USA and OK). I cannot get shipping buttons to display beside each of these two shipping option on the Cart page. Please let me know if you need login credentials.