I keep getting the invalid deck error when trying to play with my new U.A. deck. It has 40 cards, and it should be compatible with the TCG banlist, so I'm not sure why this is happening.

I'm aware that the new U.A. support was added today, so it might be a bug, or perhaps I'm just doing something wrong. Regardless, here is my deck list, any help would be greatly appreciated.

Monsters: 14 total

U.A. Goalkeeper x 2
U.A. Mighty Slugger x 3
U.A. Perfect Ace x 3
U.A. Midfielder x 3
Cardcar D x 3

Spells: 23 total

Reinforcements of the Army x 3
Terraforming x 3
Mystical Space Typhoon x 2
Forbidden Lance x 3
The Monarchs Storm Forth x 3
U.A. Powered Jersey x 3
Magnum Shield x 3
U.A. Stadium x 3

Traps: 3 total

Reckless Greed x 3

Extra Deck: 15 total

Number 39: Utopia Beyond
Photon Strike Bounzer
Sword Breaker
Gauntlet Launcher
Tiras, Keeper of Genesis
Number 61: Volcasaurus
Shark Fortress x 2
Number 12: Crimson Shadow Armor Ninja
Number 33: Chronomaly Machu Mech
Number 103: Ragna Zero
Number 101: Silent Honor ARK
Castel, the Skyblaster Musketeer
Evilswarm Exciton Knight
Gagaga Cowboy

Side Deck: 13 total

U.A. Goalkeeper
Dark Hole
Mystical Space Typhoon
Forbidden Chalice x 2
Forbidden Dress x 3
Dimensional Fissure
Torrential Tribute
Macro Cosmos
Soul Drain
I guess you want to play on Checkmate's server. News Flash, Checkmate's server wasn't updated for God knows how long.
My Youtube Channel Red-Eyes Jacollo  (new video every week)
Naz Zuki
Sometime it happen on Percy server!I think maybe the player hosting the game just not updating their game yet!When I host my own game it just okay![:smile:]
Look the fluffy!
For custom or modified decks you should use the YGOPRO usa or europe servers...