@Giiba I've thought about that too. But if I try to put myself in the government's place, I don't really know what I would do to stop the second wave of coronavirus while not locking everything down (a lot of firms are really suffering and they don't want the hospitals to be overwhelmed, too), considering that a lot of people just wrote false data down in order to avoid being contacted and put into Coventry, and that, besides social distances, the mask and hygiene, contact tracing is one of the useful measures to break transmission. And they're beginning to restrict private gatherings too, like they previously did during the spring.
To conclude, I'd say I think that the government tries everything they can to mitigate the virus propagation without a second lockdown, but like everyone, they are blind in front of this and they don't really know what is the best thing to do, too. They could order a lockdown, but for them that would mean, in short terms, the death of a lot of firms (in culture, tourism, machine building), unemployment rise, a social crisis and I don't know what else. We already had a glimpse of what it could be during the spring.
@AppLee about the app itself, I was wrong in saying that nothing has been made for people without smartphones (or for people with non conventional OSes). I could simply say that I can't install this app and use the alternative they put in place, but before I do that, I'd like to try and see if I truly cannot or not. So that I won't feel like lying when I'll say that I can't use it, because I hypothetically can - only returning to Android is my red line, for a lot of reasons (privacy, security, usability, and aesthetics mainly).