Using old save files can create a lot of bugs. The rings bug was from a few updates ago. there seem to be no problems concerning them nowDid an old save and indeed, it worked. Reward is a shard, a lease and a ring. When putting on the ring = end of play. This game is full of these problems. Once you do a "wrong" move, that part of the game is over. I did the pressure plates before and nothing happened then. In the next version the game blocked enterring the cave. i mentioned all of this on this forum and now i'm doomed to not have that reward