Could be that the OpenDev supposedly should end 16.00 CET (now it's 16.33), so when You wrote that 22 minutes ago, the OpenDev was over and the link probably dead. As You were already in the game You could keep playing, but eventually steam will lock the game and delet it's files in the directories. Only the desktop shortcut icon will remain.

However my son just said to me that Steam did not uninstall his Victor OpenDev at 16.00 CET, but there is a Victor OpenDev update scheduled for tomorrow on steam, in his auto update list. So not sure what's going on with that ??? Maybe it will uninstall it next time he restarts his steam account ??? Not tried it myself, as I'm not on steam when writing this. No time to play right now.

That being said. Some people who did play to end during the official OpenDev timeframe window have had issues getting the survey to load as well. @The-Cat-o-Nine-Tales said in last week Amplitude/Humankind stream that people who had such issues should still come here and make posts with their feedback. Since it is important for Amplitude to get feedback to improve the game as much as possible, based on player feedback, before launch.

So just make a new thread and start typing like mad about Your experiences. What You really liked and enjoyed. What You did not like as much and would like to be improved, or added. Any bugs You encountered, werid AI behaviour, or technical performance issues along with dxdiag, a list of Your PC specs, even maybe some game save file etc. 

Just make our poor Lead Designer William Dyce/@wilbefasts (the person in the opening and closing video of the victor opendev) life a pain with tons of feedback to read through in the forums, he he he !!! :P 

There is even a specific forum for Victor OpenDev feedback, even if a bit hard to find it (I just found it myself). Just follow this link: https://www.games2gether.com/amplitude-studios/humankind/forums/210-victor-opendev 

Edit: One of the forum moderators just gave some more info about feedback. I quote: 

CyRob wrote:

The OpenDev period has ended (49 minutes ago), Devs are now going through all the feedback given during it to improve them game. (very hard to do so if it's a constant stream of feedback)

The OpenDev fourm is still open (will be archived in a few days) so do make sure to give your own feedback!

So make sure You don't wait too long to give feedback, as then the Victor OpenDev Feedback forum will be archived and not accessible anymore for us mere plebs. :)

No problmes. You're welcome !!! :)

Player feedback is important, so I'm only happy to help anyone, point them in the right direction, where they can give their opinions and reviews.

@Raederle Exactly, the survey only became available after finishing a given playthrough. As others have mentioned, please feel free to post your feedback here on Games2Gether, preferably in the Victor OpenDev forum :)