API troubleshooting help

I am having some issues with my API bot, if someone can please help.

  1. Its not possible to connect and get responses from the historical values during pre-market while requesting live account keys.
  2. Live account web grids are not always updated during market hours.
  3. Is there a minimum bandwidth recommended by Alpaca to have fully functioning capabilities of API and the web platform?
  4. Why there may be occasional connection problems with the API? is there any troubleshooting documentation available?