Thanks for the tip but it doesn't seem to work that way. It looks like they convert your subscription value into however many days it could get at this new pric

Thanks for the tip but it doesn't seem to work that way. It looks like they convert your subscription value into however many days it could get at this new pricing. For instance I just did the annual upgrade for my plan (29.99€/y) and they credit me 40 additional days if I upgraded the plan (21.99€/m).