Losing playlists and repetitive "Refresh Database" after Rockbox removal

[RealMe]

Hi,

New here and to Rockbox. My problems:
tried installing it and went just fine. After looking around for a bit tried uninstalling
and that seemed to go well, as well.
But... when powering to the OF now, each time I get the "Refresh Databse" screen before entering. That wasn't the case before I installed and uninstalled Rockbox.
Also I've lost a couple of playlists I've made in the OF. Why is that?
Does Rockbox have something to do with the deletion of those playlists?
Another question regarding Hebrew: Do I just need to install a suitable font from the pack to see that correctly?

Thanks for your help.

RP