Aubameyang has been Arsenal’s top performer since joining from Borussia Dortmund but has struggled this season, scoring just twice in 10 Premier League appearances.
With his goals drying up, Mikel Arteta’s side have only averaged a goal a game in the league and currently sit 14th in the table.
Robson, the former Arsenal midfield, is concerned by his old club’s form and particularly by Aubameyang’s sudden dip.
‘Mikel Arteta is having a struggle at the moment,’ Robson told ESPN after their 2-1 loss to Wolves on Sunday night.
‘He’s not got any fluidity in the team, they don’t seem to have a game plan which they had at the end of last season. Arsenal have got a few problems.
‘They didn’t play well against Wolves whatever Mikel Arteta said. They’re not scoring goals and at times they’re easy to counter attack on the break. Problems for Arsenal.
Robson added: ‘He [Aubameyang] seems to have lost his enthusiasm, he seems to have lost a bit of confidence, he seems to have lost a bit of pace as well.
‘He was moaning about playing on the left wing but when he had those good games in the semi-finals, the cup final, the Community Shield, he was playing on the left-hand side.
‘He justs seems to have lost that enthusiasm, that little bit of confidence and the team aren’t playing well enough to get him enough of the ball.’