Where are you located? I am seeing issues for South American players right now based on Tech Support forum posts.
If you fall into that category, You may want to join the main thread where Blizz is looking into it. [Main Thread] Latin America - Connection Issues (Can't Connect/Disconnections/Latency)
If you have a different issue you want help with, use the pencil icon to edit your post and by the title you can actually move your own post. Use the drop down to change the forum name to Tech Support. That puts your post on the right forum 