Hey there, disconnections are unfortunate and feel like they are out of your control, but understand that penalties must apply to all technical malfunctions. This is because it is too easy to fake a technical issue in an effort to avoid certain matchups or leave without taking a loss. Since this sounds like a one-time issue, I would say there is no need to go deep into troubleshooting, but just make sure your equipment is fully working and test several games in a mode like Quick Play before trying to play Competitive again. You can learn about Blizzard’s policy about technical issues and how they affect Competitive Matches here: