The site administrators abandoned these forums over five years ago. (Long before the founder sold POF to the Match Group.)The last volunteer forum moderators gave up about four years ago. This forum has been in an unmoderated twilight zone ever since. Just left to exist and evolve, or devolve, on its own.
The reason I am telling you this is that your profile date indicates you have been here just short of six years. In that time you should have figured this out. So, just in case this is a serious post maybe it needs to be explained that all the demanding, begging, pleading, or even threats will not result in actions by the POF site administrators. However, forum regulars may post helpful answers and or suggestions. Or not. (Honestly, your post sounds like more of a rant than a serious request)
Anyway, here goes…..
"accepts messages only from certain users"
The message you are receiving is most common when trying to contact someone more than 14 years older or younger than you are. The 14-year age restriction cannot be changed in the user preference settings. So, even if a young girl would entertain dating a middle aged man that man cannot contact her. Nor her contact him. Not here on POF.
If you are looking to contact outside that 14 year site imposed age restriction you may want to consider using a site that doesn’t impose those restrictions upon its membership.