It looks like you are using two triggers in your flow, both For a selected item and when an item is created. That won't work. There are very rare cases where you can use a second trigger, but in general you only use one trigger per flow. Either it is initiated when a new item is created or manually when you select a specific item, but not both. You are kicking the flow off manually, but then it is waiting for that item to be created. Since it already exists it will just sit there. Remove the duplicate trigger.
In SPD you could have multiple startup conditions, but in flow you only have one trigger.
