The app, which was criticised at launch for its $11.99 (£9) a month fee, will close on 31 December.
The central bank says US stock price valuations are their most stretched since the dotcom bubble burst.
The order to make the registration mandatory had led to a major backlash from several cyber experts.
Entrepreneur Talifhani Banks has bought a modern delivery system to smaller firms in South Africa.
Railway operators have new options for electric trains including getting rid of locomotives altogether.
New treatments promise to make buildings fire-resistant without using older, toxic chemicals.
From fleets of e-bikes to individual riders, eWaka aims to sell across Africa’s delivery market.
The annual instalment of the massive series faces new challenges from competitor Battlefield 6.
The BBC looks into whether artificial intelligence (AI) can help people who struggle when clothes are oddly sized.