How to disable the router firewall?

1.Find the login website, username, and password on the sticker attached to the router body. The password might have been changed during router setup, so enter the actual one accordingly.

2.Open your browser on a device already connected to WiFi (such as your phone or computer), then enter the login URL.
Fill in your username and password to sign in.

3.After logging in, please locate and click into the firewall page.

4.Disable the firewall.

5.Save the settings and restart the router to apply the changes.

Note that the setup process may vary depending on the router model. We recommend consulting the router's user manual or reaching out to the router supplier for specific instructions.

After connecting the camera, add its MAC to the whitelist. Then, reboot the firewall.
https://www.zumimall.com/blogs/news/how-do-i-add-the-camera-mac-to-the-routers-whitelist