I thought so too, but, it happened when i got both my Mobile app and desktop up to date. The notes shared the title but the content of one of the notes got replaced with other. I honestly did not even know you could merge two notes on this app, i definitely did do anything like this or even close, all i do is update the app and type stuff in. I have checked every single note on my notes tab and the ones in the trash, 3 times over to find nothing 😕
the note does exist and it's still there only the content of it got replaced, and, i have no means to get the premium at all.
thank you so much for your response!!!