Shared IP issues, Fast checked for you, they still using IPv4 for login.
So seem like some bot/zombie sharing same IPv4 for you, you can only restart router to switch another IP which don't get shared with bot.

https://en.wikipedia.org/wiki/Zombie_(computing)

Or better, use mobile to scan QRcode for login.

This post has been edited by BenYeeHua: Oct 2 2023, 11:48 AM

Nope, as it is problem of steam blocking you, just like rockstar issues.

https://forum.lowyat.net/topic/4722046

But still, you can try get Public IP to avoid this kind of issues, but I wonder did DiGi allow it....