First, check that Lore has permission to use your microphone and that your phone's volume is turned up. If you're using headphones, check that they're connected. You can also check your internet connection or switch to typing instead of voice.
If you're still having trouble, reach out to us. You can go to the More menu and tap "Send us a message," or email us at hello@lore.co. We'll be able to help you best if we know what kind of phone you're using, your app version, and what happened. You can find your app version by tapping More, then About.