Most issues with Screen To TV have a quick fix. Find the section below that matches what you’re seeing, and work through the steps in order — if you’re still stuck at the end, jump to Section 10 to reach our team directly.
Your Device Doesn't Show Up in the App
Check these in order:
- Local Network permission. macOS requires explicit permission for apps to discover devices on your local network. Go to System Settings > Privacy & Security > Local Network, and make sure Screen To TV is turned on. If it’s missing from the list, quit and reopen the app to trigger the permission prompt again.
- Same Wi-Fi network. Both your Mac and your TV or device need to be on the same Wi-Fi network — not one on the main network and the other on a guest network.
- Guest network / client isolation. Some routers isolate devices from each other for security (“AP isolation” or “client isolation”). Check your router’s settings if this applies to you.
- Restart your device and the app. A simple restart of the TV or streaming device — and of Screen To TV itself — resolves most temporary discovery issues.
Mirroring or Extending Is Laggy or Stuttering
- Switch to 5GHz Wi-Fi if your router supports it — it’s usually less congested than 2.4GHz.
- Move your Mac closer to the router, or reduce obstacles (walls, floors) between them.
- Restart your TV or streaming box occasionally — performance can drift over time, like on any connected device.
- Lower the resolution or bitrate in Screen To TV‘s Advanced Settings if your network or receiving device is struggling to keep up.
For a deeper look at what causes latency and how to reduce it, see our article on mirroring lag.
The TV Shows a Black Screen Even Though It's Connected
On a small number of devices, a firmware-level issue prevents video from displaying even though the connection itself succeeds — Screen To TV may still report the device as successfully connected. This is a known limitation on certain manufacturer firmwares, and isn’t something that can be fixed from the Mac side.
If you run into this, please let us know the exact device model — this helps us track which devices are affected and prioritize fixes or workarounds.
There's No Sound
This is expected: Screen To TV mirrors video only — audio stays on your Mac’s own speakers or headphones. For sound in the room with your TV, pair a Bluetooth speaker or soundbar with your Mac. See our article on why Screen To TV doesn’t send audio for the full reasoning.
Text Looks Blurry When Using Extend
Turn on HiDPI in Screen To TV‘s Advanced Settings. This enables crisp @2x rendering instead of an upscaled, blurry image. It only applies to Extend mode — Mirror simply duplicates your existing screen as-is, so HiDPI has no effect there.
macOS Won't Let Me Start Mirroring
Screen To TV needs the Screen & System Audio Recording permission to capture your Mac’s display. Go to System Settings > Privacy & Security > Screen & System Audio Recording, and make sure Screen To TV is enabled. If you just enabled it, quit and reopen the app for the change to take effect.
Subscription, Billing & Activation Issues
The right steps depend on where you subscribed.
| Screen To TV Lite (App Store) | Screen To TV Pro (Website) | |
|---|---|---|
| Manage or cancel subscription | Settings > [your name] > Subscriptions, on your Apple device | My Account on screentotv.com |
| Check billing / renewal date | Apple ID subscription settings | My Account on screentotv.com |
| Refunds | Submit directly to Apple at reportaproblem.apple.com — Apple's decision is final | Contact us at support@screentotv.com within 14 days of purchase (EU consumers) |
| Activation | Handled automatically once subscribed through the App Store — no license key needed | Click the Activate button in your confirmation email, or from My Account |
| Free trial | 7 days, managed entirely through your Apple ID | 7 days, starting when you enter payment details at checkout |
| Trial reminders | Sent automatically by Apple before your trial ends | Sent by us via email before your trial ends and your card is charged |
Is My TV or Device Even Supported?
Screen To TV works with any device that supports Google Cast. See our device compatibility page for what’s been tested and confirmed, what’s been reported by users, and what’s still unverified.
Advanced: Resetting Screen To TV via Terminal
Reset App Permissions
Clears all macOS permissions granted to Screen To TV (Screen & System Audio Recording, Local Network), so the app will ask for them again the next time it opens. Useful if a permission looks enabled in System Settings but the app still isn’t working correctly.
Open Terminal (Applications > Utilities > Terminal) and run the command for your edition:
Screen To TV Lite
sudo tccutil reset All com.veryvidivici.screentotv.lite
Screen To TV Pro
sudo tccutil reset All com.veryvidivici.screentotv.pro
Reset App User Preferences
Clears all of Screen To TV‘s saved settings (resolution, codec, bitrate, and other Advanced Settings), returning the app to its default configuration. Useful if the app is behaving unexpectedly and resetting permissions didn’t help.
Open Terminal and run the command for your edition:
Screen To TV Lite
defaults delete com.veryvidivici.screentotv.lite
Screen To TV Pro
defaults delete com.veryvidivici.screentotv.pro
Still Stuck?
If none of the above solved it, reach out to our team — we’re happy to help.
