Hi there! I understand you're having trouble deleting old images from the history in the Arvin app. To help you better, could you let me know if you've tried deleting them individually or if there’s an option to clear the entire history? Also, are you using the app on your Windows device through a browser or a desktop application?

Meanwhile, here's a general approach that often helps:

1. Try deleting images one by one from the history section, if that’s possible.
2. Check if the app has a "Clear History" or "Delete All" option within the settings or image history page.
3. If neither option works, try refreshing the app or page and attempt deletion again.
4. Clear your browser cache if you're using it via browser, as outdated cache might prevent updates.

Could you confirm what steps you've already tried, and I'll guide you accordingly?