This is getting out of hand, web wallet doesn't work, windows and probably other wallets as well, al least mine couldn't start and gets error: couldn't connect to server: EOF reached (code 1). What a shit time for crypto world.
Download the source from their github and you can run it locally. There is no need to compile anything since it is all HTML/JavaScript code that runs in your browser. You'll likely need to change the two blockchain explorer address in the js/index.js file from "explorer.myhush.network" to "explorer.myhush.org" for it to see your balance correctly. With that change I've run it locally and successfully sent and received HUSH. See github.com/MyHush/myhushwallet for source. Hope this helps.
The web wallet is down as per their twitter
https://twitter.com/MyHushTeam/status/959546837949493248but as xyzzyx has mentioned you can download the web wallet and run it locally on your pc.