I m pretty sure Hugepandahugs was relating to the SLR sign in, not the DeoVR Pin protection.
I have the same problem for a few weeks now.
It happens infrequently, I tried logging out with
1) the little cross at bottom right side
2) just "killing" (with the Oculus button and exit)
3) pressing the side button of the Q2 long and shut down the Quest2
It happens for sure also when using option 1.
Every suggestion would be very welcome :-)