Problem/Bug worlduard and chestshop combat with a issue

Recently , i try to build up my server
as worldguard to protect my lobby and use Adminshop to sell item for inside
as me used /rg flag name use allow ... it already succesed to use chest shop in the protection of inside the protection of worlduard (that sloved )
but
but
but
whenever no op player buy any item for adminshop
it will display like that
you brought item from Admin shop for $$ dollar
You are not permitted to interact with Wall_sign

You are not permitted to interact with Wall_sign
You are not permitted to interact with Wall_sign
You are not permitted to interact with Wall_sign
again and again for everytimes buy thing

anyone could help me please -.- that annoy issue

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please help



{{Merged by moderator: Please use the Edit button next time}}

 

@omg8456 Are they able to purchase the item or just get the message they did?