Your comments

I don't know, it seems specific to only 1-line widgets that render incorrectly, the other (resiable I guess) are fine.
Could this be an issue with high pixel-density of the device that needs some conditional treating? I haven't seen such a problem with any other widget on my phone.
Anyway thanks for your real-time support :)
Ok, glass has a transparent background :) Now I get it, non-glass options have solid background? I guess that makes sense for some other phones? But this is still an issue: all the 1-line widgets (4x1, 2x1, 1x1) have an incorrect size - the widget selection dialog visualizes them as 4x2, 2x2 and 2x2 respectively, and they are scaled up 2x on the homescreen.
Today's update to your app fixed the label issues - I can select them and the widget shows unread message count correctly. But the widget sizes are still incorrect and appear scaled with a white non-transparent background. Hope this feedback helps.

I'm actually much more interested in helping to get this working - I haven't found any other app that could do what yours does. I managed to get one step further in the meantime, as the GMail app did finally update.

I can get to widget settings and add them to my homescreen now, but:

  • when the settings dialog shows up I get two "Something went wrong - try again" popups
  • label dropdown is empty for all accounts
  • when switch accounts "Something went wrong - try again" pops up once
  • if I ignore this and add the widget it obviously shows 0 all the time
  • all the 1-line widgets (4x1, 2x1, 1x1) have an incorrect size - the widget selection dialog visualizes them as 4x2, 2x2 and 2x2 respectively, and they are scaled up on the homescreen

Is there anything else I can do to help?