Because of lack of demand and since we have no funding nor man-power to maintain ADaCGH2, this app is, at least for now, not working. If you are really interested in having this web working again, email me.
You might want, instead, to run ADaCGH2 locally, in R. It is available from BioConductor. The Bioinformatics paper is this: Diaz-Uriarte, R. "ADaCGH2: parallelized analysis of (big) CNA data", Bioinformatics, 2014, 30: 1759-1761.