You can manually extrude by clicking on the filament type on the touchscreen, then the ellipsis (3 dots), then select "Move"
It seems like its printing but then its either clogging or printing too close to the plate to extrude reliably. Is your filament getting grinded away by the feeder gear at the back? Its probably not a coincidence that the flow meter keeps going off, something must be preventing the filament from extruding properly...