Hi, with the no pro licenze could I set the Number of core use on lrtimelapse?
Yes, of course - this is possible with the private and the pro license.
If I buy a private license now and in future I will buy the pro version I should pay only the difference?
If you buy a private now, then you could Crossgrade later to pro by buying the Crossgrade from
https://lrtimelapse.com/upgrade . It will be 15€ more than if you for the pro right away.