You seemed to leave out a few details here for me to properly advise you on this issue. Like are you the property owner. Does your lease require you to do property maintenance. You simply state: "I was instructed by the plumber about six months ago on how to remove the plug when he installed it. Yet, despite my best efforts, I cannot unscrew this thing. And I need to gain access to the drain so I can perform some maintenance on it." I see that the plumber instructed you on the proper way to remove the plug. I see you have attempted to unscrew the plug, to no avail. I do not see anywhere in here or the rest of the question where the plumber advised you to remove it by unscrewing it, in either direction. I see in fact from your comment to mayer that you are not the property owner and that the property manager was in fact the one that called the plumber to begin with. that tells me that maintenance to the plumbing is not your responsibility. Attempting to resolve plumbing may even be against your lease. I would say the correct way for you to resolve this and to give the plumbing the proper maintenance is to call the property manager and inform them of the problem.
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You seemed to leave out a few details here for me to properly advise you on this issue. Like are you the property owner. Does your lease require you to do property maintenance. You simply state: "I was instructed by the plumber about six months ago on how to remove the plug when he installed it. Yet, despite my best efforts, I cannot unscrew this thing. And I need to gain access to the drain so I can perform some maintenance on it." I see that the plumber instructed you on the proper way to remove the plug. I see you have attempted to unscrew the plug, to no avail. I do not see anywhere in here or the rest of the question where the plumber advised you to remove it by unscrewing it, in either direction. I see in fact from your comment to mayer that you are not the property owner and that the property manager was in fact the one that called the plumber to begin with. that tells me that maintenance to the plumbing is not your responsibility. Attempting to resolve plumbing problems may even be against your lease. I would say the correct way for you to resolve this and to give the plumbing the proper maintenance is to call the property manager and inform them of the problem.
You seemed to leave out a few details here for me to properly advise you on this issue. Like are you the property owner. Does your lease require you to do property maintenance. You simply state: "I was instructed by the plumber about six months ago on how to remove the plug when he installed it. Yet, despite my best efforts, I cannot unscrew this thing. And I need to gain access to the drain so I can perform some maintenance on it." I see that the plumber instructed you on the proper way to remove the plug. I see you have attempted to unscrew the plug, to no avail. I do not see anywhere in here or the rest of the question where the plumber advised you to remove it by unscrewing it, in either direction. I see in fact from your comment to mayer that you are not the property owner and that the property manager was in fact the one that called the plumber to begin with. that tells me that maintenance to the plumbing is not your responsibility. Attempting to resolve plumbing may even be against your lease. I would say the correct way for you to resolve this and to give the plumbing the proper maintenance is to call the property manager and inform them of the problem.