That author pulled all his apps from HPM it seems like a year ago now.
He moved them all over to his own Bundle Manager app.
Then he deiced to take a break from coding so I think all his apps are as-is now.
You will need to go into the HPM settings and use the UnMatch feature to make HPM forget about it.
I would then suggest just updating to the most recent code manually by installing the latest bundle: https://github.com/bptworld/Hubitat/raw/master/Bundles/DeviceWatchdog.zip
I think the bundle should overwrite the existing code and update it.