Hm. Since you're having trouble using the schematics tool and the minecraft server, it sounds like maybe there's something blocking learntomod's connection on your end. Hopefully you're not using a vpn or a privacy or ad blocking app? Also, make sure your are using a high speed internet connection -- you might try resetting your router by unplugging it, waiting a few minutes then replugging. And try checking your firewall:
LearnToMod's IP address will be unique for each LearnToMod user. The Minecraft port, in general, is 25565.
Check that you've added minecraft.net to your firewall's content filtration system as an allowed server; the Minecraft client needs to be able to authenticate, and does so at Minecraft.net. Also make sure mod.learntomod.com is allowed as well as http://login-thoughtstem.herokuapp.com/ -- check your browser's list of allowed sites or exceptions.
Additional Note: Windows firewalls on Windows 10 computers can sometimes interact with Vox-L in strange ways. If you've downloaded the standalone vox-l artifact and it's being troublesome, look under the security < firewall tab in your windows 10 control panel -- vox-l app should on the list of allowed apps.