Anyone else having issues with this, I noticed today Google pushed out version 3.10.14
of the Play Store now it's doesn't seem to work any more, tried clearing the data/cache from the Play Store & checking my Google Account & it shows the change in device but apps still remain incompatible from the app & the web versions.
Well, installing/pushing apps from the web version seems to be working now, but not from the actual device, better than nothing I guess.
That was short lived, not working again, says apps are compatible but grey's the device out even with Nexus 7 set as device.
Edit 3: Market Helper v1.1
released today! Now stuff works again