Audio-Pip not working any more

The Audio-Pip plugin is not more working. Now, when I start it, it open a pip window but not in fullscreen, just the standard pip size.

I use it daily, but in another way. In combination with pipzap, to zap TV in fullscreen listening to a radio channel. To reach this I made this stepps:
-switch to my radio channel
-activate pipzap modus
-DOWN button
-TV button
-select a TV channel
-activate Audio-Pip
At that point I can zap in fullscreen listening my radio channel.

But the last days, at that point (activation of Audio-Pip) I receive this:

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Code Error: Session instance has no attribute 'pip'
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Can you check it please?