Received word yesterday that mine has now been repaired & is on it's way back to me. 2nd time with same fault, but both under warranty.
I let Planet support know in Jan that the issue had reoccured (actually happened late Nov), but due to Covid & clearing my device down that took an extra few weeks. My suggestion, make them aware asap even if you need some time to clear it before sending. You have to wipe it before it goes, as it will come back blank.
Not planning on using it as my primary device when it comes back, aiming for Linux only I think (when I find some time..)