bought 2 used consoles 1 bann and 1 parental control

To elaborate a bit on Smwutches' answer, Xbox support may be able to help with the second console with parental controls enabled. However I'm afraid there is no recourse for the banned console. Sorry about that

You would have to contact support. 1-800-4my-xbox if you're in the US/Canada or http://support.xbox.com/contact-us

Have you set up a family account for yourself and the child that has XBL Gold (ie parent account with Gold, Child 1 has access as defined by parent account)? This would be best to control unauthorized purchases but would limit game sharing as only the Parent
account would be able to play on the non Home console.

If you haven't created a Family and have simply purchased XBL Gold for Child 1 then you can share that with Child 2 by game sharing:

• The console that Child 2 uses should be set as the Home console for Child 1 account
• The Child 1 account would download the applicable games to both consoles
• The Child 1 account would use the non Home console while logged in with his XBL account
• I recommend setting a custom pass code on purchases if you don't want unauthorized purchases made if you have added your CC to the console.

I bought Xbox Wireless Elite Series 2 Controller, Here in EU (Greece) all controllers have 1 year warranty and the Series X/S consoles 2 years.

Guess what?! I've got the same problem!

I just gave my kids an XBOX 360 S R2D2 console for Christmas. I bought it used with 1 wireless controller and bought 3 brand new wired controllers. When I plug in 2 or more wired controllers they all default to Player 1. The wireless will show up as Player
2.

I sure would like to be able to play with more than 2 players.

Microsoft - please don't make my children cry!