Terrible. Want money back

I want to return my money for this app full of bugs. So i bought it for sheet music editing and found that app very imperfect. Here is a short list of problems I have:
1. There is no metronome switch for playback (I can hear metronome click only when im recording)
2. Select tool always misclicking (I shall click on display 10 or more times to move region selector)
3. Terrible latency while recording from external MIDI device
4. Mismatching of the metronome and time signature on recording (when i try to record something live i hear 3/4 metronome click instead of 4/4 which is applied to track)
5. Problem with switching notes between upper and lower voices
6. Problem with setting note length when editing notes
7. Problem with setting triplets when editing notes
and more...
So these problems make this app impossible for a peaceful and productive work. I can not wait until the application developers will correct all errors and bugs. I just want my money back.

p.s.
I think it would be nice to offer developers to add a free preview version of this app to avoid bad reviews, and for users to understand for what they pay

Caleort about Notion, v2.0.146