First of all, I'm from Portugal (in case you know how it works in here).I don’t know what the actual spec of the Corsa is I. Your country. It will differ from country to country. Also, no idea if the spec is the same for everything else between the Corsa-e and the ICE Corsa.
Are you thinking of proximity locking? The keyless start is one thing but proximity locking was an issue with cars the had it before the ECU updates back in May. When I got my Corsa-e, there was no proximity locking even though it was advertised as having it.
After the ECU update in May, the proximity locking function was there in the car menu options and since then it has worked all the time. It can be activated and deactivated in the car menu settings.
I'm talking about the automatic hands free access. I talked about the keyless start because it needs a special key, like the hands free entry, and I have it. At least for 2021 models there is a pack regarding some extras which I mentioned, and that pack leads to hands free entry.
However, I was told I don't have the "smart key", but I think I have seen someone with a 2020 Model Year corsa mentioning this. Also, I don't have the option in the screen, like you. To be honest, I'm a bit lost with all of this, it's confusing. Also my car has literally all the extras, as it is an ultimate nav elegance corsa.