Welcome to the Community!
We were able to locate your account using your community details and can confirm that the unlimited upgrade has been applied.
Are you still unable to get a good speed? Are you using a WiFi or a Wired connection?
If you are using a WiFi connection, then it is possible that signal interference is causing the issue.
We've created some articles that will help you improve your home network.
Let us know if you need further assistance.