I dont want to make too much assumptions here and leave the diagnosis to the experts.
Since approx. 1L of printed resin I have the problems shown in the pictures. 99% of the prints fail.
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Dents in the base
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Supports not touching the object.
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Wobbley supports or snapped supports.
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Failed Prints that miss out parts that stick to the vat.
It also seems that the resin is stickier than ususal after cleaning the models.