Nodejs MQTT implementation issue

Hi!

I'm having trouble with mqtt implementation in nodejs. I'm connecting with the example nodejs script, with a clean:false setting:

const mqtt = require('mqtt');

const client = mqtt.connect('mqtts://mqtt.flespi.io:8883', {
clientId: 'flespi-examples-mqtt-client-nodejs',
// see https://flespi.com/kb/tokens-access-keys-to-flespi-platform to read about flespi tokens
username: FlespiToken ${process.env.FlespiToken},
protocolVersion: 5,
clean: false
});

But when I check the settings of the session, it clearly says, it's a clean session:

{
"result": [
{
"size": 0,
"ip": "37.76.123.229",
"id": 2761155786,
"connected": true,
"cid": 2042338,
"clean": true,
"client_id": "flespi-examples-mqtt-client-nodejs",
"expires": 0
}
]
}

I don't really see what could be the problem here...