The percentage of Iran visa rejection through LeaveAbode visa service is very low.
Based on our last applications, less than 1% of requests may get rejected. The visa will be issued for you until your requirements are provided properly and your occupation is not sensitive. Journalism and the politics related jobs may result in rejection.
However, pay attention that the MFA (Ministry of Foreign Affairs) is the only authority in visa cases. If they have any concerns about any application, they could hold up the process. In that case, we keep in touch with them and update you with the result.