Yes the new mirror link (.kim) is official link from Stake, it was given in the telegram channel few days ago. I believe it was at the time when many links seems to be inaccessible. Some links were not working few days ago, that's why Stake gave a new mirror link but it is not added in the mirror link list at playstake.io In the last few days there were many complaints from players because of access difficulties but I think it is all fixed already. Even though the information under playstake.io that all links are offline, in fact they are all working. Perhaps needs an update for the playstake.io site.