thank you so very much for your quick and professional answer.
Some minutes ago I have notice that not article-generator is my problem, but Artiojoomsef and the extensions made for ads-manager (the new updates are more sophisticated and I never expected to do that).
I have installed both, article-generator and an update from artio in the same day before Christmas.
I have a better look at my keywords and I notice that they are not generated by your extension. I have experience setting Number of keywords to "0".
Please forgive me for any kind of trouble I have do it to you.
It could be a nice idea to wrote somewhere in the manual on troubleshooting that kind of confusion to avoid further problems with your clients.
Thank you again from all my hart for your extension and the good and professional job you do!"
So, more than five stars I can't rate this component.... but I think that it deserve seven!