I had to reformat my computer due to a MacOS problem, after that I recovered my iCompta document whichwas in sync with my iPhone, however it doesn't work anymore. Could you please tell what should I do ?

The problem is the the sync button in iPhone switches off by itself, so I have to be checking it periodically

Never mind. It's working and normal again. I don't know what happened.

Yes, I do save the document

Sync was working fine (iMac and iPhone) via iCloud. Now it's not. What should I do?

Sync working fine. It 's written "Activate iCloud or Dropbox synchronization" in the referred paragraph, however no mentioning of checkbox. Maybe it is obvious for most of the users but it sure wasn´t for me. I suggest mentioning it explicitly if you update the manual.
Thank you

I found it . Here it goes.

Where is the Synchronization page? I can´t find it.

Still can´t manage to do it. I started the whole process again opening the document from the older version, I was asked to choose where to save the document, I saved it to Documents. Then I followed the ICloud instructions but no luck. What am I missing?

I just updated to iCompta 6 both in iMac and iPhone. Document is saved into iCloud Drive, however I try to open it from my iPhone and I get a message "no documents found". What is wrong?