some items are not yet bound to their extended data

I replaced administrator\components\com_flexicontent\models\items.php by the one provided, but I still have the warning...

Did you try to bind these items to a content Type, while also selecting a "default" category?

as I told you I have already some articles with differents types, and I haven't this warning before trying the latest version. I just would like to make it disappear

Please send me a PM, with super admin access

I updated to latest version and still have issue :

FLEXIcontent version 2.0.0 RC9b (r1576)

The system has detected that some items are not yet bound to their extended data. Either you have just import them from Joomla!'s com_content or you changed the content section in the global configuration.
IMPORTANT!!! This process may consume a lot of server resources depending on the number and the size of your contents. To avoid timeouts use a reasonable value according to your server capacity and the number of items to bind.

One or more of your items are in inconsistent state that we have not anticipated and binding fails, you can send me a PM with admin login,

i will identify and include this case too