database on nas synology hs with kodi 21



since I upgraded to Kodi 21 (I was previously on Kodi 19 then Kodi 20.5), Kodi can no longer find the covers, films and series for me

since then I have deleted all my database on my synology nas (phpmyadmin)
and i reinstalled kodi on a fresh install

and kodi never finds me the covers, films, series

However, it worked perfectly before!
I work under Windows, and Linux (coreelec)

how I could solve the problem,