Synchronization between IOS and Windows 10 versions

Synchronization between IOS and Windows 10 versions

Hello,
I just installed the ZOHO Notebook application and was hoping to have a seamless synching note taking app betwene IOS and 2 Win10 laptops.

I moved notes form another app to Notebook on IOS and installed on the 2 windows machines.
At first it seemed to synch well but after migrating some notes from Everynote the win10 app behaves not as it should. I tried manual synching on several occasions.
I see the note books and the notes listed but trying to open a note just shows an empty sheet asking for a title.
I forced to stop on every device and even rebooted to no avail....
I hope you will have a solution for this as I urgently need this and I will be forced to revert to the previous app which was text-only. That was the primary reason I switched to Zoho...

Thanks for your support !