A. Check for any available updates for the app in the Google Play Store. Developers often release updates to fix bugs and improve performance. Go to the Play Store, search for Linkr, and tap 'Update' if available.

B. If the app is up to date, try clearing the app cache and data. Go to Settings > Apps > Linkr > Storage > Clear Cache and then Clear Data. Note that clearing data will reset the app, so you may need to log in again.