LinArt — Support

Help with the LinArt iOS app and LinArt-brand IoT devices.

Quick contact

In-app feedback

The fastest way to report a problem is right from the app:

1. Tap the avatar (top-left) → opens Settings
2. Scroll to "Report a problem" (orange icon)
3. Pick category (Something's broken / Wrong data / Slow / Feature request)
4. Describe what happened — add steps to reproduce if possible
5. Keep "Attach diagnostics" enabled — it sends app version, OS, account ID and last server probe status
6. Tap Send → opens Mail composer pre-filled to support@linart.club

Common questions

I see "All devices offline" but they work in the dashboard web UI

This usually means your authentication token expired. Solution: Settings → Sign out → Sign in. We're working with our backend team on automatic token refresh.

I can't pair a new LoRa Gateway over Bluetooth

1. Make sure Bluetooth is enabled in iOS Settings
2. Hold the PRG button on the gateway for 2 seconds — OLED should show "Pairing"
3. Tap "Add device" in app → search will pick up the gateway by manufacturer data
4. If not found, check firmware version: need v0.4.63+ for the current BLE protocol

Sensors show offline on Petal Dashboard but online on Devices tab

Fixed in version 1.0 (11) — update via TestFlight or App Store.

SOS button doesn't trigger — I tap and nothing happens

SOS uses a 2-second hold-to-arm gesture (anti-accident). Press and hold the SOS button until the red ring fills, then confirm in the dialog.

Apple Watch app doesn't see my devices

Open LinArt on iPhone first — it pushes device snapshot to the watch via WatchConnectivity. After first sync, the Watch app shows the cached list offline.

Device-specific help

LoRa Gateway

Firmware repository: github.com/Vikinges/High-Range-LoRa-Gateway
OTA updates: app menu → Status → "Check for updates"

Display Hub (CYD)

Firmware repository: github.com/Vikinges/Mian_display_hub_v1

Smart Relay (4ch / 8ch)

Firmware repository: github.com/Vikinges/Smart_Reley

Sensor Hub

Firmware repository: github.com/Vikinges/sensor_hub

Account & data

Delete my account

Email support@linart.club from your registered email address. Account deletion is processed within 30 days.

Export my data

Email support@linart.club — we'll send a machine-readable JSON export within 14 days (GDPR Article 20).

Privacy policy

Read our privacy policy →

System status

Server health: host.crm-iot.com
For incidents lasting > 30 minutes, we post updates on the dashboard.