Hi,
Some of you are having problems to evaluate or activate Substance Designer problem.
We found out the problem, and we will release a new version in the coming days.
In the mean time, I am joining in this post a trial license you can use to evaluate SD5: simply choose "Activate from a license file" and use this trial license.
For those who cannot activate the software online, you can go to your Allegorithmic account and download the license file.
Cheers,
Nicolas