Okey, thanks @davidb !
Newbie like I am - I’m playing around with this template: Bio Builder like Linktree Template | Bubble
And here somehow developer hase made /l/ page where he adds data from preview page. If i change page type, then nothing happens because actually I don’t get where this /l/ comes to the end url link?
I checkd workflows and everything but cannot find place where this /l/ will be added to main url where people can see their “linkstree” page.
Sorry for stupdi questions 
Thanks!