Hello @Aimed Hope that you are well! Would you be able to cross-check if you are using the correct data-app-key value that is connected to your API app when you embed the dropin.js script?Please note that if you are using the IP address 127.0.0.1 to access your localhost, you will need to include 127.0.0.1 in the domain section of the API app. If you are still having difficulty, please provide a code snippet of your implementation.
You've set the domain correctly, but here are a few things to check:
If the issue persists, try deploying to a staging server to see if it works outside of localhost. Let me know if that helps!