RAK2171 Factory Reset?

Is there a way to put the tracker in factory mode?
What happened is that I added it to the TrackIt app, then I removed it from the app.
Now every time I try to pair it again it says it’s already registered to another device.

Ideas on how to proceed?
Thanks

BUMP! I too would like to know how to factory reset these if necessary. When was the last firmware update? Very little documentation available.

Bump! Same problem two years later. Does anyone have a solution?

I’ve bought 6 trackers assuming they would be plug and play in PnP mode…