No block appearing in Site's Sidebar

Hi.

We are using OJS 3.3.0.17 (PHP version 7.4.33). We are currently configuring a multi-journal site. You may visit the site (https://journals.du.ac.bd/).

We have enabled several blocks from Site Settings → Appearance → Setup. However, none of the blocks are appearing in site’s sidebar.

We could however put blocks in the sidebar of each individual journal (e.g. https://journals.du.ac.bd/index.php/afj).

Any suggestion on how to resolve the issue for site’s homepage ?

Thanks.

Asif