Unable to make subs !

Please help, I am not able to make subs in the match !
What went wrong?!

Have u put ur players on the sub bench if u have i got think of any other reason unless u have already done 3 subs in the match

#52377 Liam EFC 1878 : Have u put ur players on the sub bench if u have i got think of any other reason unless u have already done 3 subs in the match

#52377 Liam EFC 1878 : Have u put ur players on the sub bench if u have i got think of any other reason unless u have already done 3 subs in the match

hi,
the problem is that the bench is not displayed

and in the match i am not able to make any subs. i can see only the player which have also a grey background.
unfortunately i cannot add a screenshot.
br