Once again... I've checked again out of personal interest. As far as I know, this is effectively an annual licence with which you should be able to extend your licence. However, this is not clearly written in my view...

What I would advise you to do: Go to Youtube and search for the following video: "Sigma for Canon and Viltrox for Nikon - wiesnernews". This is mentioned at 6:45. The link from the video will take you to Amazon. I'll just buy it there. Certainly the right one and much cheaper. Sorry digitec but your product description really doesn't shine here and it's a shame that Adobe doesn't offer the same discount for Switzerland as it does abroad.

Many thanks for the information. In the meantime I have bought a 1 year extension on Amazon (approx. CHF 355) and redeemed the code on the Adobe site and it works perfectly. In one fell swoop I am now paying the equivalent of less than half of what I was paying before. Unbelievable and I am very surprised as a long-time full-payer. But great and from now on I'll always be on the lookout.

To my knowledge, yes.