I am also on the whatsapp group. Exactly the same situation as you..
Very sceptical.
Have won prizes in the lottery, making money on stocks from their advice, have just won 40 pfit tokens on the lottery and been asked to download an app (NDAEPRO) to receive the tokens..
..This is where it gets dodgy
Reluctant to download anything knowing that scammers can access your device with downloadable files disguised as something else.
No personal / banking details handed over ever.