Unable to add the device

Hey folx, my parents bought a roomba a few years ago but never really used it. They never connected it to the app or registered it online.

About 6 months they gave it to me and Ive been enjoying using it a lot. However when i go on the app and try to add a new device, it doesn’t see it. There is no qr code in the box and if i try to add it manually, no device is found.

Any advice?