Good Morning,
Thank you for taking the time to share your review with Delonghi.
With regards to the coffee temperature the espresso temperature that can be increased and I have linked a video below for you to view, this can be found from 2 minutes 26
https://www.youtube.com/watch?v=Awb722Yr2OA&list=PLEMc1V_7ahGEBep-u8Nui8rFmK9DrAflt&index=4
For milk preparation the end temperature is super important, when milk exceeds 70 degrees the fat it contains begins to separate and this leads to a loss of texture.
Many thanks
Gemma, Delonghi UK