It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

I emailed GOG support and this is the answer I got about weekly updates/events: (I can't figure out how to attach it directly.)

I'm still a bit skeptical when it comes to HG, but this is hopeful!