The only people you can be sure pay are those with a green background around their profile. A profile highlighted in green is someone who has signed up for the platinum package.
On the left, you should see a section labeled Visibility Options. You can still contact people when your profile is hidden but they won’t be able to look at your profile so that sort of defeats the purpose (so remember to make yourself visible if you start contacting people).
There several things hiding your profile do but primarily it removes you from search results.
If you have other photos that can be made your primary photo just click the button and the process to change it should begin. If none of your other photos are marked as “make primary” your current photos are not seen as good candidates for your primary photo.
This would normally be because they want your primary photo to be a clear headshot of only you.
Most people look at a large number of profile but contact very few (or sometimes none at all).