A. 1. Restart the app: Close AR Drawing completely and reopen it to refresh the interface. 2. Clear app cache: Go to 'Settings' > 'Apps' > 'AR Drawing' > 'Storage' > 'Clear Cache' to remove temporary files that may be causing the interface to be unresponsive.

B. 3. Update the app: Ensure that you have the latest version of AR Drawing installed, as updates often fix bugs and improve performance.