Implementation of areafix processing, first subscribe/unsubscribe with scan

app/Models/Address.php

@@ -569,6 +569,7 @@ class Address extends Model
 	public function echoareas()
 	{
 		return $this->belongsToMany(Echoarea::class)
+			->using(AddressEchoarea::class)
 			->orderBy('name')
 			->withPivot(['subscribed']);
 	}