Problems with migration and not able to add content

Before, as other people (some of them friends of me), experienced for more than 1 year, if I click on the ‘Edit tab content’ button it shows only an empty editor even if I have already had a content in it. And if I add some new content to a tab it overwrites the previous content.

So I had to leave the tabs intouchables and not to add more tabs.

Now, other problem emerged. A friend and me migrated the content of the tabs using xml, my friend to wordpress.com (payd plan) and me to other www.remarpro.com site. Both of us have the same issue: the tabs migrated, but they are empty, absolutely empty. In fact, if we try to preview, it says “Add at least?1?tab to preview this tab set.”

I see the information is in the xml, but the plugin do not import the content, or it is something related to the first issue: If I click on the ‘Edit tab content’ button it shows only an empty editor even if I have already had a content in it.