To clear all notifications at once from your apple watch, you must first press the Digital Crown.
First of all,
Update: A similar service ‘COPY’ is offering 15 GB as starting space for free. Join now using this link, you’ll get 20 gb (5 gb extra).
What is DropBox?
Dropbox is a cloud-storage [....]
Unfortunately IDM is only available on Windows platform.
But there are almost good alternatives.
b) DownThemAll (firefox plugin)