When you use an online converter, you are entering your IPTV server details into a third-party website. Ensure the website looks reputable. If you are concerned about privacy, avoid using converters that require your MAC address unless you trust the source implicitly.

Some servers strictly enforce IP-to-MAC matching. If you convert a MAC to M3U and try to run it on a different network, the provider may block the account. If you'd like, I can:

Explain how to manually to fix broken links.