As there have been made threads about already the trade rooms are occupied or just not enterable. This can be due to the fact that there are either players or items laying on the wooden pressure plates making the trade room locked/closed.

My suggestion is that the wooden pressure plates gets swapped out with stone pressure plates. It's fast and doesn't change any of the redstone circuitry, but makes items unable to give out a redstone signal upon being dropped on the pressure plates, whilst players are still able to close the trading rooms by standing on them.

 

support have this in the new trading rooms

 

Think there is another post about this made by @ferras , potentially go and have a look but many supports for this - Becoming quite inconvenient as a major Kitpvp seller, when all the trade rooms are locked and I'm worried about my customers stock being stolen.

 

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The Staff