Restricted Activity window pops up when opening certain windows

Why are Users seeing a Restricted Activity window pop up when opening certain windows? Omni Price locks Users out of certain windows when an Omni Price contract is being imported or exported, a contract mass update is occurring, or the Omni Price contract window is open. All of these things interact with the pricing of an item. So, for that reason, Omni Price locks out User access to these windows until these other things are completed first.