Hello,
1/ Theme Options > General > Enable Classic Widgets Panel > On, then check settings of Product categories widget – https://gyazo.com/b026b1f6163a3e53212c98494259c416 => https://gyazo.com/5359a5da159b6cf453df617c813e6333 Clear cache and check now.
2/ Provide FTP access, please. If you do not know how to create FTP contact with your hosting provider, they will help you.
Regards