I also have this problem. Today I installed CircuitStudio, completed all registration points and I got a message like that: "you are not using a valid license. Select a license below and select Activate", but there are no license options available.
Need help too.
Hi Siran Reis Korkmaz,
I can confirm that the Altium developers are working on a fix for the "Licenses are not available" problem that is shown when trying to obtain the eval license. Please contact me at firstname.lastname@example.org and I can help you with a work around.