Problem with Orb Master screen calibration (general steps with special case for PAD)

Please following steps to do a calibration.

1. Open toolbar, go to setting -> "other" and set game to Puzzle and Dragon(if you are now playing PAD). Press OKay.

2. Back to my app, go to calibration and click "screen calibration". A calibration board jumps up.

3. Switch to PAD.

4. Use arrows to move and re-size the calibration board. Make sure the board fit the the 5x6 puzzle.

Note: it requires somehow accurate positioning of calibration board to get good puzzle analyzing results.

As you can see, board fits the puzzle.  Press OK to confirm.

5. Good result for correct calibration

6. However, if the board doesn't fit puzzle like the screenshot below(the bottom row of puzzle hasn't covered by calibration board),

7. You will get poor result with many black circles.

8. IMPORTANT: it may be a BUG. When you do calibration, as PAD is not a full screen game, it will show the notification bar on top. The notification makes an offset to calibration board, so that the board is not somehow shifted.

Therefore, when you do the calibration, FIT the board to the puzzle first(same as step 4). Then shift the board down a bit(equals to notification bar's height). And press OK. It should be workable.

As below, I can correctly get the top four rows after I put bottom line of board under 4th row with a down shift of notification bar height. 

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9. Alternatives to step 8. 

If you don't want to do an inaccurate down shift, you can take a screenshot of PAD first. 

Then use an image viewer to open the screenshot in full-screen mode. 

And fit the calibration board to the puzzle shown in image viewer.

No shift needs to be done in this case.