No extra deck, please help

Okay so whenever i get on DN i go to my deck constructor and i have an extra deck with 15 cards, these include brio, roach, and other standard things. but whenever i go into a duel i start it up and i don't have an extra deck, PLEASE HELP

Can you take screenshot of your deck

I would be glad to do that, but im not sure how to, can you tell me how?

Try saving lol.

Probable solution: Put the Synchros in the Extra and make sure it's not the Side.

Miror B. is right.Probably you may put them in the Side and not it the Extra :p

Save your deck, then save it again. Then try get into a duel and see if it appears.

Go on dueling network, take them out and put them in again. This has acutaly happened to me before, but i fixed it just by taking them out than putting them back in, weird i know ;P.

what the other people suggested didn't work try this.
Good luck!