You may configure the ADC to use an soc input which is connected to a timer. This will help you to set the conversion rate.
I would check for unwanted connections on the board.
You can also add an OpAmp buffer before the power monitor block, then thr ADC input should not affect the signal anymore.
You can also route the EOC output to a pin and check the actual sample rate.
Last but not least, the sample rate is determined by the clock thats fed into toe power monitor clock, so you can vary that.
IT WORKED !
Ive added an OpAmp before the power monitor block and now it works perfectly.
Thank you very much!