We need your location to confirm you're at the gallery. If sharing fails, check your settings:

iOS
Settings → Privacy & Security → Location Services → Safari Websites → set to "While Using" or "Ask"

Android
Chrome → tap lock icon in address bar → Permissions → Location → Allow

If your screen turns off you will lose your connection and have to start over. Here is how to keep your screen on:

iOS
Settings → Display & Brightness → Auto-Lock → set to "Never"

Android
Settings → Display → Screen timeout → set to 10 minutes or "Keep screen on"