Paolo,as of my experienced regarding visit visa.My Sister tried to apply a visit visa for me,she's working in Governent (Hamad hospital)but was denied by the immigration.They said only Her Husband can apply for visit visa,bacause only Husband has family status and can sponsor a close kin.He is not allowed to sponsor me because I'm His brother in law,only His son or daughter or brother is allowed for His sponsorship.They changed the law again...because before I entered Qatar as visit visa by my brother in law's sponsorship (2001)
So,i've tried even business and tourist visa just to enter Qatar again,because my new Job is waiting there.But still it was denied by the immigration,since they can trace my record of 2 years ban.Ask your relative in Qatar also and give me some news.Goodluck to both of us!