The manual is also excellent and the whole frame makes a solid impression.
I'll send the wall mount back yet:
1.) For Altbauwohungen like mine is this wall mount no use - the 3 horizontal holes on the wall for the rich leverage caused by the hanging thereon TV, just not enough.
2.) The supplied plugs are way too short and too little spread (concrete / sand wall - old building maintenance). I then used in my installation considerably longer and wider brand plugs - yet the bolts could not find sufficient support to carry the weight. The upper hole of the 3 holes is with me now completely broken so that there now no longer anchors reinpasst without einzubetonieren with synthetic resin.
A pity not to use for old buildings as with me, so you go back.