Problem with my 1-wire solar sensor

Hello everybody

I have a big problem since 2 weeks…the graph generated through my 1-wire solar sensor shows nearly everytime 100%, even when the moon is full → nearly 100%. It’s installed for nearly a year now and it always worked perfectly, I don’t remember any changes I made on the WD solar setup…so #-o I am very embarassed.
If somebody has some ideas where to look or is the sensor stuck ?

I will send the print screens to anyone who can help me

Thank you very much in advance