Compressive strength of Mineral Plaster Super Lupp

Hello,
we received the Super Lupp about four weeks ago and had similarly bad experiences, especially with the ladder. How did the case proceed for you?
I would be very pleased to receive a response.
Best regards

The craftsman had to redo the work. A reinforcing mesh, a reinforcing plaster, and a topcoat plaster were applied, and the whole was painted twice.