That cube is a calibration cube that should measure 10mm x 10mm x10mm when it's done. It's not a bad idea to start with it to make sure the printer is properly calibrated.
I also had problems getting my objects unstuck from the blue build pad and that's why I switched to glass and hairspray.
I've now added Qidi's cooling fan to my extruders and I'm able to control it through Simplify3D settings. It does help my prints and so far I've tried it with PLA and PETG.
I will be doing a post on adding the factory cooling fan to an earlier model Qidi Tech soon.