Hi there! Thanks for reaching out about the speed option not working in Easy Video Speed Editor. To help you best, could you let me know a bit more?

- Are you trying to change the speed on a specific video file or any video?
- Is the app responding at all when you select the speed option, or does nothing happen?
- Have you already tried restarting the app or your device?

Once I have a bit more detail, I can guide you through some simple steps to try and fix this. Meanwhile, here are a few things you might want to check:

1. App Version: Ensure your Easy Video Speed Editor app is updated to the latest version available for Android 10 devices. Older versions may have bugs fixed in updates.

2. Video Format Compatibility: Sometimes videos from certain sources or formats might not support speed changes properly in the app. Are you editing videos recorded with your device’s camera or downloaded from elsewhere?

3. Clear App Cache: On Android, go to Settings > Apps > Easy Video Speed Editor > Storage and tap "Clear Cache." This can resolve minor glitches without deleting your videos.

4. Restart App: After cache clearing, close the app completely and reopen it to see if the speed option works.

If these don’t help, I can guide you through clearing app data (which resets settings but keeps your videos) or checking for specific video issues.

Could you try those first and tell me if anything changes? That way, we can narrow down the problem. Looking forward to your reply!