Remove glued-on smart oil pan, how?

Hello together, I want to renew the old oil tank of my smart petrol engine 450 BJ2000 with a new tub with drain screw. Prima, smart on the ramp, hole drilled in, oil drained, Lima spray protection unscrewed and the 14 Torx E8 unscrewed. The tub now remains stick, as I had suspected, but it sticks bomb-proof! I tried with light up to relatively heavy hammer strokes – nothing – ; the contact holes then warmed up with hot air gun and knocked further down – nothing. As ultima ratio I put a car lifter on the front edge (located across the lid edge) and use the weight of smart (+ mine) and unscrew it. No result, the oil tank doesn’t make any murks out of it. I wanted to ask you if you have a tip on how to remove the tub. How did you manage it? I would be very grateful to you, I really don’t want to hear the smart Sc.