Siemens EQ6 s700plus does not make hot milk

Hello to the round. A week ago I bought a Siemens EQ6 s700plus. She makes really hot and strong coffee, only as soon as milk is in the game, this is only lukewarm. According to specifications, the milk should have a temperature of 60-65grd.C, with me it comes out only with 45grd.C and then the latte is really only lukewarm. But this seems to be a general problem with Siemens or how are your experiences? I would therefore tend to a De Longhi, because these machines are supposed to produce hot milk, but I'm just bothered by this extra milk container, which you have to clean again and the lack of double cover. This simple hose system from Siemens I find really great. I do not know now if the 45grd.C milk are really normal with Siemens or if it is really defective:wacko:
Thanks wonni