Thanks for the reply @EmilFly, the volumes aren’t listed! This is a postgres app (non-flex/legacy version) so maybe they get attached some different way? Either that or they haven’t been attached all this time! 
ID NAME STATE REGION IMAGE IP ADDRESS VOLUME CREATED LAST UPDATED APP PLATFORM PROCESS GROUP SIZE
e784ee51f69668 withered-night-5954 started syd flyio/postgres: (v0.0.41) fdaa:0:47b5:a7b:f1:69ca:874b:2 2023-10-07T01:38:14Z 2024-01-20T00:37:41Z v2 app shared-cpu-1x:256MB
e784ee54b64928 bitter-glade-761 started syd flyio/postgres: (v0.0.41) fdaa:0:47b5:a7b:f5:546e:fc63:2 2023-10-07T01:41:17Z 2023-10-19T00:15:30Z v2 app shared-cpu-1x:256MB
I seem to recall having issues transitioning this app to machines previously, that might be when it broke.