After half a year it was broken. After complaining at Star Pharmacy Kistenpfennig Mainz we should return the fee.
On 27.8. we did also on Hermes. In fact, then came on 06/09. (After 10 days) a confirmation email which will be reviewed the complaint.
Now a month has passed and nothing happened.
We would in any case have to buy something at this seller neither the heating pad.
NO RECOMMENDATION FROM US