Okay, so we've picked the quest up, and the lift to reach Riis-Reborn isn't working (AGAIN), but we utilised Salvation's Grip to reach the top. Having now reached the mission flag, we are unable to launch the mission. Very strange! Going to see if we can work around this somehow.

What is the exact quest step you're stuck on? Sharing a screenshot via Twitter or imgur works best.

The Sabotaging Salvation mission. Well, launching it rather. As we speak, my friend left the instance, relaunched a solo one, and his lift from Eventide Ruins to Riss-Reborn Approach is working fine. He has launched the mission and I've now joined his fireteam, so hopefully it will now work. The mission flag would have the option to interact, but attempting to do so would do nothing. EDIT: Okay, so after joining my friend's instance of the mission, we were able to progress the quest step. It seems that the elevator glitched out, and 'manually' climbing up doesn't seem to load the space correctly, and therefore prevented me from launching the mission. I've only ever had the elevator glitch during this mission, and it was the reason why we initially dismantled the quest. Doesn't seem to be a common issue. Frustrating, but we got there in the end. Thanks for your help!

That's not a quest step. If you're working on the "Aspect of Control" quest step asking you to destroy 5 Entropic Shards and already have Salvation's Grip, you can begin searching Europa for the Shards. At this time, only 8 of the 9 Entropic Shards are accessible in-game.