Here, "take account of" means "include, among the factors contributing to something." "I think Saturday would be a great day for a picnic in City Park." "You're not taking account of the mosquitoes. They're awful there at this time of year." An example that is closer to yours: "I check my weight weekly on my bathroom scale." "Yes, but the scale doesn't take account of what percentage of your weight is body fat."

I believe to take account the first question is possibly explain attraction I am a native English speaker and that one confuses me a little bit but the second question means they have a lot in common they just weren't attracted to each other or they didn't like the way the other person looked