Just posting this to help any other finding the same issue.
I had already successfully downloaded digital issues previously, but then I've been experiencing this issue with both Chrome and IE fully updated to most recent release and patches on Windows 8.1.
After logging in successfully, nothing happens when clicking on the magazine download buttons. I'm a subscriber but seems the system forgot this.
I waited for a solution from the support since September 14 and after more than 2 weeks without further answer I searched again and found an old post (21 Jan 2015) here in the forum where a user solved a similar issue by just changing his password.
Why this happens still now is a bit surprising.
Why you have to solve it by yourself is even more puzzling.
Being a paying subscriber you would expect more listening and more support than this:
Dear Mario,
Thank you for your e-mail.
You need to login on http://www.elektormagazine.com with your e-mail address ...omissis... and your password.
Here you can download the magazines from 1990 until now.
This ticket will now be closed.
If you have any questions or remarks please feel free to reopen it.
Kind regards,
Hopefully this time someone will take note of the issue and solve it.
Kind regards,
Mario