This certainly isn't ideal! We'll do our best to help you out.
We're going to need a little more information to help figure out the issue for you, so please tell us everything that you can.
In the mean time; here's some common issues:
- Windows Permissions, Migblock's Networking might be blocked by Windows. To fix this simply check "Allow" when you play your first world, or server.
- Incorrectly Installed Game-Client, The Game might not be properly installed. To fix this all you've to do is Delete the "game-client" folder that lives inside .migblock, which is found in %APPDATA%.
If these don't work, or you've any questions at all, please don't be hesitant to write back with more details about your issue (How it occurs and such). And don't be afraid to join our Discord Guild and ask our community for help also! We're very friendly happy to help!
Migblock Discord Guild: https://discord.com/invite/v9eavtFPJN