Hello! It sounds like you're experiencing a couple of frustrating issues with My Mini Mart, particularly with glitching during checkout and frequent pauses in your game. Let's take a closer look at these problems.

First, can you let me know if you've noticed if this happens in specific places in the game or after certain actions? Additionally, have you tried any troubleshooting steps already, such as rebooting your iPhone or reinstalling the app?

In the meantime, let's try a couple of straightforward solutions:

1. Restart Your Device: Sometimes, simply restarting your iPhone can help clear up temporary glitches.
- To do this, press and hold the side button and either volume button until you see the slider. Slide it to turn off your iPhone, wait a few seconds, then turn it back on.

2. Update the App: Make sure your My Mini Mart app is up to date. Developers often release updates to fix bugs and improve performance.
- Open the App Store, tap your profile icon at the top of the screen, and scroll to see any updates available.

3. Check for iOS Updates: Ensuring your iPhone is on the latest version of iOS can also help.
- Go to Settings > General > Software Update and see if any updates are available.

If you've already tried these steps, please share what you've done, and we can explore more advanced options together!