It means that freelance writers offer model papers (= no cheating) and writing services encourage students to cheat? A freelance writer doesn't encourage to cheat? I think there is no difference between the two.

I'm skeptic about friends - some of Facebook friends are fake and they spam other friends so the advice is no good. Seeing websites advertising in good places or on google brings more authority to them. Getting a spam link via a private message is not the same.

Everything from Ukraine is questionable, sad but true. Ukraine is the kenya of Europe when it comes to online research services.

Students don't recommend academic writers even to their friends because they don't like what others might think of their actions.

There is no comma before 'because.' If the middlemen were satisfied with your sample pages, they would order more; you lost your last opportunities to earn money.