Hi to all,  im trying to make a 4 layer board (dimensions Width:57mm height:37mm) componentes : Ic lqfp128 and capacitors. I went to layers and select 4 layer board, then went to autorouter (select local autorouter -- already have the file to local route). I choose the inner layers to signal and start the autorouter. What I can see is that the autorouter  doesnt use the inner layer to autoroute (working in the top and bottom layer instead). It get stuck at 90% with the inner layer poorly routed. Maybe im missing others settings. I even try with 6 layer and the autorouter still reach the 90%. Im using linux Opensuse and mozilla (and chromium) to work with easyeda. Gastón