A. 1. Close the app completely by double-tapping the home button (or swiping up from the bottom on newer iPhones) and swiping the Publix app off the screen. 2. Restart your iPhone by holding down the power button and sliding to power off. 3. Once the phone is back on, reopen the app to see if the freezing issue persists. 4. If it continues, check for any available updates in the App Store and install them, as updates often fix bugs that cause freezing.
B. 1. Clear the app's cache by going to Settings > General > iPhone Storage. 2. Find the Publix app and tap on it. 3. If there is an option to 'Offload App', select it. This will remove the app but keep its documents and data. 4. Reinstall the app from the App Store to clear any corrupted data.