*Message** Unauthorized in sen-et plugin

I am new to SNAP, this is my first attemp to use it.
I am trying to download Sentinel 2 images through SENET plugin and get this message “The request has not been applied because it lacks valid authentication credentials for the target resource”… however I have access to Copernicus Open Acces Hub with my credentials (https://scihub.copernicus.eu/dhus/#/home), I have my profile. Someone could help me to understand where is the problem?
Thank you in advance!

Did you input your credentials into SNAP (in options)?

Thank you for your reply. No, I didn’t but looking into “options” I am not find where input my credentials…
could you guide me? Best

You can find them under General / Product Library.