Wall-mounted toilet bowl from LAVINIA, BOHO One series, rimless design. Link:
https://laviniaboho.com/ru/product/podvesnoy-unitaz-one-rimless.html 

BERGES flush plate. Link:
https://berges.ru/installyacii/knopka-berges-dlya-installyacii-novum-d5 

For the convenience of manipulating the model, restrictions are set on the rotation of the lid and seat through the Float Limit. Unnecessary axes of displacement, rotation and scale of elements are blocked.