iPad iOS 9.3.1 don't sync notes

Hi,

I've been writing some notes on my iPad mini 4 with latest iOS 9.3.1, but they don't appear to be pushed on iCloud (although if I write notes on my macbook, I get them on the iPad). Others suggested to sign out and in of iCloud on my iPad, but if I start doing this, I get a warning that my iCloud notes are going to be removed from the iPad, so I'm going to lose the notes that didn't get synced. Is there any way out of this ridiculous mess, other than saving the said notes by exporting them via other way? I already sent a couple of them by email to be safe. I'm really annoyed that such a key application of the iThings/iCloud eco-system can't be trusted.