DELONGHI ECAM 23.266 does not switch on

Hello dear forum members,
I have a problem with my DELONGHI ECAM 23.266.B fully automatic machine. Until last week, it was working flawlessly. Now, unfortunately, the machine can no longer be switched on. Only after countless attempts can the machine occasionally still be switched on. If you then select that a coffee should be made, it breaks off after a few seconds.

Otherwise, it is still noticeable that the machine when it goes on always jumps without extraneous effect between the bean size.

Has anyone heard of the
problem and can help me? Is there a way to reset the electronics? I have unfortunately neither in the manual nor online something found.

Thank you and best regards