Re: Unable to use player items from duplicate storage
Had the same issue, I solved it by checking this youtube video: https://www.youtube.com/watch?v=dFcBYQKyH8M
In short the steps are these:
1. Go to an SBC challenge and select the player from your SBC Storage and put it in the SBC Squad.
2. Check your SBC starting 11, select the same player and select Send to Club (NOTE: THIS DOESN'T ACTUALLY SEND HIM TO THE CLUB).
3. Go into the SBC Storage again, then select the same player and select "Send to SBC Storage"
4. This actually sends him back to the club and now you can put him in your starting 11.
This is very confusing, but it worked for me.
Mark as solution so others that have the same issue can see this. It's very frustrating.