Pokemon B/W Wi-Fi issues

I tried to get online with Pokemon, but it keeps saying there is a problem with my Pokemon. If there is a problem with my team, let me know.

Swampert Lv. 55/Torrent/Muddy Water-Water Gun-Ice Beam-Earthquake/ Obtained from pre-gens as a Mudkip

Larvesta Lv. 57/Flame Body/Ember-Flame Charge-Bug Bite-Double Edge/ Obtained in-game

Braviary Lv. 56/Sheer Force/Fly-Aerial Ace-Superpower-Sky Drop/ Obtained in-game

Serperior Lv. 57/Overgrow/Wring Out-Leaf Tornado-Leaf Blade-Giga Drain/ Starter

Blaziken Lv. 84/Blaze/Brave Bird-Sky Uppercut-Blaze Kick-ThunderPunch/ Obtained from pre-gens as Blaziken

Sneasel Lv. 73/Keen Eye/Dark Pulse-Ice Punch-Brick Break-Aerial Ace/ Obtained from pre-gens as Sneasel

None of them are holding items.

Thank you