problem installing blynk server

I was looking for similar problems but I did not find when installing the blynk server I can enter from my ip to the page - … https: // ip: 9443 / admin … but when I put the default user it does not work for me …admin @ pass admin … inside the server I did it in ubuntu I have a file with a username and a pass but that tampoko comes in. Does anyone have any idea what I can do?

Maybe this will help…