Issue with challeging ngrok url on facebook developers

[rootkit7628]

If you encounter some issues with challenging Facebook Developers, you should know that Facebook doesn't allow ngrok url configured with europe - eu as region so you need to move it to us like this :
👉🏿 ngrok http <port> --region us

[gaetan1903]

I encountered the same errors too but with a vps in the europe region.

Facebook does not like all European servers, it may be because of the GDPR which is applied in Europe.