Liverpool left-back Andrew Robertson may have deactivated his Twitter account.
The decision could be connected to the Reds' 2-0 defeat at Napoli on Tuesday.
The Scot gave away a late penalty when he was adjudged to have fouled Jose Callejon in the box, with Dries Mertens slotting home from the spot.
Fernando Llorente then nipped in ahead of Robertson to seal victory for the home side in stoppage time.
Reds boss Jurgen Klopp hit out at the decision to award the the penalty - and the failure to overturn it through VAR - after the game, although former Premier League referee Mark Clattenburg has claimed it was the right decision.
The Mirror reports a search for his Twitter account '@andrewrobertso5' shows up no results, although his Instagram account is still online at the time of writing.