... All in all for the price you can not expect much more.
it's a very good oven, it does its job in all program levels as one would expect, everything else is m. E.
an exaggerated expectation that perhaps the lack of dt. manual explains.
... Buttons the retractable operating were already addressed (which can be wobbly and cheap effect, and bad when adjusting the temp.)
... Connection with the safety plug not a problem
... Incl. 1 grid and 2 sheets of which a deep and made of stainless steel?
Further accessories
as already written a good stove for narrow)