So you understand, The bazel fell off, and need to reconnect it to the case again. The Retaining ring with the 3 points must be the connecting points, that keeps it together with the case?
You have to remove the glued on insert. Then assemble it on with the steps I give you. Just use 3m tape or rubber cement. Very easy and only held on by the plastic gasket
For those whose bezel gasket (hytrel ring) is lost or not usable, this fishline diameter worked as is on one I repaired for someone else. No sanding needed as I had to do on my own watch.
This watch was great until I sold it to a friend(one of the very times I've sold to someone I know) and of course the bezel came loose on him THE first night he has it. I gave him all the forewarnings, told him not to play with the bezel all the time etc etc and I believe he listened, just bad...