Problem with syncing notes

Hello everyone,

I have a small problem with syncing notes in my iDevices. I have a MacBook Air, iPad Pro and iPhone 6s. In my iphone and macbook the sharing of notes is completely ok, whatever I write in either of them is synced within seconds. When I open the notes on iPad I also see the notes I wrote; however, if I write something there it does not get synced to my macbook and iphone. I checked the settings and everything is the same in all of the devices. Can anybody please help? It is important for me as I use notes daily.

Thank you so much