how to disable ad blocker on iPhone 14

The only native blocker built into iOS is in Settings > Apps > Safari > Block Pop Ups

If you are using some 3rd party app, you'll need to contact them or delete their app from your iPhone.

If You Installed an Ad Blocker App then contact the App developer.

If you encounter any challenges with third-party applications, the best course of action is to directly contact the app developer for further assistance. Here's a brief guide on how to do it:

1. Identify the app developer.
2. Visit their website or app store listing.
3. Look for their contact information or support channels.
4. Clearly describe the issue you are facing.
5. Provide any necessary information they may need.
6. Follow their instructions and provide feedback.
7. Be patient and follow up if needed.

By reaching out to the app developer, you increase your chances of receiving accurate and personalized support for the challenges you're experiencing. To contact an App developer --> How to contact an app developer - Apple Support

The pic below may help you