Thank you for your reply.
I don't think the problem is your cloud.
I had nothing saved on that, before this issue. When BugMiss006 suggested me to try it, I did, and realized that I'm able to sync ONLY NEW DATA (created after my post).
All my old data are still on my disk, but invisible, or better...uneditable (invisible on edit page),
but I can see them all, on the principal list (when I click the "yellow key button").
Now, I'll try to install the portable version.
Thank you again
PS: obviusly, I can add new data to my old list, but I can't delete anything because not editable, so my Magic Fill list became big and bigger.
PS2: question: could it be caused by some disk cleaner?