Download problem Sentinel-2 from Hub

I keep getting the message “No product available” when I try to download Sentinel 2 images from the Hub site. I have looked at numerous UTube videos and tried every which way they suggest but keep getting the same answer. Furthermore, I know it is possible to download images from Snap, but have been unable to find an explanation on how to do it. Any help on either problem would be appreciated.

Please contact the support of the Copernicus Open Access Hub by e-mail:eosupport@copernicus.esa.int