I still have my old retainers of 10 yrs ago with me up and down both.but the wire of the retainer of upper teeth is going downward of teeth and not up?

Teeth move: If i understand, you have retainers that you haven't worn in many years and they longer fit. Nobody would expect them to fit since without wearing them with frequency it is likely that the teeth have moved. The purpose of retainers is to stop this movement but that only happens if you wear the retainers.

To wear or not....: If you are happy with the position of your teeth as they are now, then you are lucky and there is no need to use any retainers at this point. If you would like them to look better, you would have to see an orthodontist who might be able to make some slight modifications of your teeth and then you would need a new set of retainers. The choice is yours.

Appointment needed: You may want to schedule a visit to your orthodontist, so he/she can check the retainer fit and make proper recommendations.

See any Orthodontist: Any Orthodontist in the world can make a new set of retainers for you or to fix an old one. Take care.