problem with launcher
What is “the game administrator”?
You may want to consider making an external backup of the gw2.dat file located under my documents/guild wars 2, it’s about ~17gb in size and it contains the games mass of data. Next time you lose this and the game starts downloading, close the client, copy and paste this file back into the same folder (overwriting the newer file), then reload the client. You would only then need to download any updated files and misc.