Troubleshooting OpenAI Connection Issues and Account Limits

cant connect open ai. it tells me the following: This action may run slowly because the limits you have on your account associated with this model are low. Consider upgrading your OpenAI API key to a higher tier for faster performance. See "Increasing your limits" here." However, on the open AI page it says that the upgrade to higher limits goes automatically based on usage. how can I connect open AI?