lost widgets

Hi
Today, after optimizing my database, all my visual editor widgets went missing.
I have tried repairing the DB, optimizing it etc.
I have tried reverting to a softaculous backup of db and entire dir
I have tried recreating a clone of the site from backups
I have tried uploading an sql db backup directly to myPhpadmin.
Nothing helped.
Is there a way to recover the widgets or at least their content?

https://wordpress.org/plugins/black-studio-tinymce-widget/