Hey, I'm sorry about that. There are a few things you can try to see if it helps.
-Try to clear the cache on your system, refresh your router, and try with a wired connection (if possible)
-Try to change the DNS settings on your system to either Google or Cloudfare DNS to see if that helps
If you continue to run into any issues after trying these steps you can reach out to official support. They should be able to offer any more tips and assistance with the situation and hopefully get you up and running as soon as possible:
Contact Us (Live Chat):https://support.activision.com/contact_us
Twitter Assistance: https://twitter.com/ATVIAssist
Facebook Assistance: https://www.facebook.com/ActivisionAssist?fref=ts
The live chat with an Activision agent should be available. The chat hours are from 11a.m. - 7p.m. Pacific Standard Time