Unlocking fitbit Versa as it's removed from the app

My Fitbit versa 2 is locked and says "unlock with phone", however I stupidly removed the device from my Fitbit account and now realised I shouldn't have as I can't re pair it as I need to be able to see the 4 digit pairing code on the screen which won't display because of the lock.

Can someone please help!

I'll be eternally grateful.

Have tried all the usual things including:

- Resetting watch my holding down button for 10 seconds, but it doesn't give me the longer vibrate after  the logo disappears

- Turning Bluetooth on and off (Bluetooth is working find and picks it up)

- Uninstalling and reinstalling Fitbit app- Trying web version

Basically, I need a way to unlock a Fitbit versa 2 WITHOUT a phone!