Client-Driver Connection & reCaptcha Fix

I'm experiencing two issues with my cross-browser application. The Client app is unable to connect with the Driver app after locating it. In addition, the reCaptcha on the website is missing the site key. I am not sure if any recent changes to the backend could have affected the connection issue.

The ideal freelancer for this project should have:
- Proficient experience in Java and Swift for Android and iOS app respectively
- Expertise in PHP for backend troubleshooting
- Familiarity with reCaptcha implementation

Your task will be to:
- Diagnose and fix the connection issue between the Client and Driver apps
- Implement the missing reCaptcha site key on the website.

Please note, I need help with both issues equally. Thank you.