As far as I can tell Adobe Scan is a Mobile App and I can see no option on my iPad to uninstall in the Creative Cloud App so I believe I would uninstall the same way I uninstall all applications from my iPad. When the button becomes "live" its available to delete. I have no idea how Chromebook functions, as a computer or tablet?
Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.0.1, PS 27.0; ) Camera Oly OM-D E-M1.