Your wallet may be appearing as offline due to the configuration on your computer’s firewall settings.
You can following the steps on the following website to allow the MB8 Coin program through your firewall. https://computing.which.co.uk/hc/en-gb/articles/209752885-Allow-or-block-programs-with-the-Windows-Firewall
If you are using an alternative firewall provider, such as Norton or AVG, please refer to their support sections on how to allow a program through the firewall.
The wallet is stand alone and does not require any configuration changes in order to work, this will auto connect to the MB8 Coin network.