MetaMask Flask cannot connect to Demo app

[gologo13]

Hi, I have a problem with connecting to Filsnap demo app.

Steps to reproduce

1. Install MetaMask Flask from https://chrome.google.com/webstore/detail/metamask-flask-developmen/ljfoeinjpaedjfecbmggjgodbgkmjkjk/related
2. Visit https://filsnap.chainsafe.io/
3. Push "CONNECT TO METAMASK"
4. Pop-up came up to connect, but it failed. See the attached screenshots.

I even tried https://www.glif.io/, but got the same result.

[vorburger]

See #258.