Thank you for the link, but does not resolved my problem:
“Simply go to wp-admin->All in One SEO Pack->General Settings and scroll down to…”
How can I access the general settings of a plugin, which is not visible between my plugins? There was no ALL IN ONE SEO PACK plugin, so I could not access it.
After 2 weeks I lost the patient and removed the plugin from FTP and reinstalled on my WP-admin site. Fortunatelly, it works and I didnt loose my data, everything was memorised. I am happy.