Hello Marti1025,
Thanks for visiting Apple Support Communities. We understand that when using a specific app or their website, you're seeing an "Access Denied" alert. Great idea with clearing your browsing history to see if that helps. In your troubleshooting did you check to see if there are any restrictions turned on that could be preventing access: Use parental controls on your child's iPhone, iPad, and iPod touch
If that's not the case, let us know more:
- Does this alert appear as soon as you launch the app or visit the website, or after putting in your user information, or sometime else?
- Which software version is installed on your iPhone as menu options can vary across versions? To find out tap Settings > General > About.
- Does this happen with any other websites or apps?
The more details you can provide the better.
Take care.