hotspot won't open login portal

I setup hotspot with “Hotspot Setup”, but client won’t open login portal when connected.
What is worse, when open login domain/ip manully, client will open RouterOS login page, not hotspot portal.
It did work long times ago.
I don’t know what I did messed it up.

Reset HTML has been tried without any difference.

It’s almost like the hotspot portal server (lighttpd or something) didn’t start.