Yes, recieved email from them few weeks back 'Aviva Drive is being withdrawn from service at 23.59 on 1st September 2020, so the app will no longer work after that date.'
The app discountinues now seems like.
I'm now certain but I think it is, maybe give them a call to check
Is the 20% additional discount still going on if you have the annual travel insurance? Can’t seem to find any information on this on their website