Check Captcha Job app permissions. If any of these permissions required to use your device's features are disenabled, Captcha Job might not work.
Uninstall and reinstall Captcha Job. If nothing else has worked, completely uninstall Captcha Job then reinstall.
Restart your device. Last, restarting your device can often clear most problems causing Captcha Job not working
2. Fix Captcha Job Server issues & Internet Connection
Check network connection: An unstable Internet will make Captcha Job be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
Disable VPN: VPN can cause connection errors and lead to Captcha Job not working. Make sure all VPNs are off
Enable background data: When Background data is turned off, Captcha Job may not be able to connect to the Internet when running in the background.