Hi,
I meant your source product (input) when you are using the supervised withart classification. I think you cannot use the product after a deburst. I think you also have to do the operator Polarimetric Matrix Generation.
I have already installed the PolSARpro software. The Problem is, that I can not use the Sentinel Data.
I explained the problem here : Data Conversion PolSar
Let me know when you have found a solution.
Cheers!