RouterOS homepage returns "Error 404: Not Found"

Hi, one of my RB951G-2HnD, no more show login page with download links.

http://192.168.88.1/webfig - works fine

Upgrade to latest release and configuration reset not helps.

How I can return this page? Maybe i can do full wipe of router?

maybe some kind of branding (incorrectly applied) by the seller?
Netinstall should fix this.