In order to use Revolut I had to bootlock my FP6, apparently. So I did ./fastboot flashing lock_critical. And rebooted. The FP6 still says it is not bootlocked. So i did ./fastboot flashing lock_critical again this time it says:
But you only mention lock_critical. The lock is a two stage process to include lock_criticalpluslock. Please be wary of using the phone in the state effectively “half locked”.