"Find a seller" link missing in advanced search

[movieman990]

Second week of June, 2018.

In advanced search on left of page you can no longer do a search for a seller (or member). Now it only shows finding contact info and that only works if you have completed a deal with a buyer (you leave his buyer name and the item number you sold him).

I still want to look up the profile of a prospective buyer  OR the listings from a certain seller. Sure there's a workaround for the latter....just have one of his listings and then it's easy to find the others, but what if I just know this guy's seller's name and want to look at his profile. 

Any help?