It depends on how the file is shared and this feature is only available in Send Anywhere app.
Especially when sending and receiving large files, we highly recommend installing Send Anywhere app to minimize impacts on an external environment of a web browser and to transfer large files more stable and faster.
6-digit Key Transfer / To device Directly
You cannot continue to upload or download paused files because of directly transferring files in real-time.
You can continue to upload or download paused files because share-Link transfers files to the server and store files temporarily. Click the 'Resume' button in the History menu.