presumably that is the page they are trying to redirect you to.
I find it interesting they don't try to impersonate the site or anything, but very clearly say it's a telkomsel-issued certificate (tepat/baik is something like 'good' or 'appropriate internet' iirc?)
To be entirely fair, you are in a Muslim country with heavy internet censorship. I wouldn't really call it naive as it's the nature of TLS (1.2), you can see the hostname but can't inject a page into the middle without blatant warnings. South Korea, etc all do the same thing
