Correction to my previous comment, from Josephus (nprofile…5jps): that app is **not** in use on this account. They moved this account to Staircase during the lock-out and use Cordn with a different account now, so the old install is exactly what the answer they picked says it is — a previous install — and the clean-up was the right walk.
So the "a live second app on the same phone" route is a possibility I inferred, not what happened here; take it as a question for the wording of that step, nothing more. What this issue reports is unchanged: the walk ended on Done, telling them what was held had gone out, while the hold still stood and their message was parked again.