There was a really funny woman on tv a few years ago talking about the way men fill in their profile for online dating.
Hair colour - because they only look at their chin in the mirror when they're shaving, they put the colour they were born with. They truly haven't noticed they're no longer that colour.
Height - as children their mums always said "You're so tall! When are you going to stop growing! You're my big boy" etc so when asked for their height they think they must be at least 6 ft tall. (Plus if their mums are older they will have shrunk so they're even taller in comparison.) After all, when was the last time anyone's height was measured?
Weight - they have a choice of either average (because all of their contemporaries are overweight too) or well built (if they are bigger than their contemporaries.) Well built sounds OK, doesn't it? You think of rugby players.
Hobbies - well, they don't have any. They see the list though and think, Oh I used to love camping in the scouts. And that day I went rock climbing - that was great. And I loved that gig I went to in 1987. And they were given a couple of books a few Christmases ago that they haven't had time to read yet, but fully intend to.
Job - they were put in charge of something because they'd been in the company the longest time and they were a difficult person to deal with in meetings, so that boss decided to get him off his team.
So the woman turns up expecting a 6' tall manager with dark brown hair and average build who loves hiking and rambling and live music and reading.
He's actually 5'8", several stone overweight, with grey hair and doesn't remember the books he's read and clearly hasn't been outdoors for pleasure in a very long time. Oh and he's in charge of the stationery cupboard.
But POF is dreadful, OP. Try Love and Friends or Guardian Soulmates.