OVMS v3 (Nissan Leaf) – Server V3 stuck at “Connecting”, never connects

Hi,

I’m setting up an OVMS v3 (OVMS-33-7600G) module on a Nissan Leaf (2014) to replace Nissan’s original remote climate control service, which is no longer supported.

Goal: remote climate control / pre-heating
Vehicle module: OVMS v3 (ESP32)
Location: Finland

Current status

• Firmware updated successfully via microSD
  → now running 3.3.005 (OTA)

• Module works locally:

  • CAN data OK (SOC, ODO, GPS lock, etc.)

  • Web UI accessible via local WiFi (192.168.4.1)

• Cellular modem:

  • SIM: Hologram global IoT SIM

  • Local operator: Elisa (Finland)

  • LTE online, PPP connected

  • DNS working (8.8.8.8 visible)

  • Hologram dashboard confirms SIM is active and data usage increases when OVMS is powered

• Server settings:

  • Server: api.openvehicles.com

  • Port: 8883

  • TLS enabled

  • Username = OVMS user

  • Vehicle ID = code printed on the device label

  • Passwords consistent across module, server account and app

Problem

OVMS Server V3 never reaches “Connected”:

• Status stays at “Connecting…”

• Log shows: Launching OVMS Server V3 connection (oscv3)

• Never transitions to Connected

• OVMS App cannot connect either

What I have already tried

• Firmware update + multiple reboots

• Re-entered all credentials carefully

• Verified Vehicle ID matches the physical device label

• Restarted modem and network interfaces

• Confirmed cellular data is flowing via Hologram dashboard

Questions

1. Any known issues or special requirements when using Hologram SIM with OVMS Server V3?

2. Anything specific to verify regarding TLS / MQTT on Server V3?

3. Any known problems with OVMS firmware 3.3.005 and Server V3?

Happy to provide logs or screenshots if needed.

Thanks in advance.