We would like to advise you to export the raw key with your Lunu wallet konfigurations
Can you do this? If you get a private key like this, you can import that elsewhere:Bitcoin private keys (this section is largely based on data from
Example: L41YPdADy46J9Vh77WGR2bktFwEZ6knza2Xim3Urq9CEWynkkLgn
(don't post your private key here!)Example: L41YPdADy46J9Vh77WGR2bktFwEZ6knza2Xim3Urq9CEWynkkLgn
And they also told me to import my private key in raw format but that's not working anywhere
One step at a time 
You can only import a key after you've exported it.