Pairing failures usually fall into three buckets: an expired code, a network issue on the Watch, or an old cached build.
Fix 1: get a fresh code
Pairing codes expire after 5 minutes. If you took longer than that to type it in, generate a new one from Account Settings > Generate Watch Pairing Code and try again.
Fix 2: check the Watch has a network
The Watch app talks directly to mapvs.com. Confirm the Watch has wifi or LTE (settings icon > wifi list). Reboot the Watch (hold side button + digital crown until Apple logo).
Fix 3: reinstall the Watch app
Long-press the Watch app icon > Delete App. Reinstall from the App Store on your iPhone (the Watch companion is bundled with the iOS app). Open the freshly installed app and pair again.
Still stuck?
Email support@mapvs.com with your Apple Watch model, watchOS version, and a screenshot of the error. We'll usually respond within a business day.