This coach profile is active and accessible through the direct URL to the person who uses this profile:
https://lichess.org/coach/Frontier96
However, multiple users cannot find it in the coach directory, even when searching for Frontier96, his real name, or filtering by country, including me. Could someone check whether his coach profile is properly indexed in the coach search?
When in need for help on lichess then "Lichess Feedback" is the better sub-forum for it.