If you are referring to having equipped (selected) a player icon in-game, but that icon not displaying here on the forums, that seems to be an “unofficially known” issue (encountered, observed and reported by multiple players, but not acknowledged on the official “Known Issues” topic.)
Replying to confirm you are NOT the only player affected and to consolidate links for reference… the symptoms have changed slightly over time, as noted in this topic:
But, as of this post, this issue unfortunately is still present and impacting players (myself included).