I called IRCC and they said it will come soon and no problem with your application.I’m also a May 2018 applicant, my test was in January. I’m also still waiting.
Did you try contacting them after one year of submitting your application was complete?
I wonder if contacting the MP would help. There are June and July 2018 applicants who have received the oath ceremony date already so not sure why they’re not processing it in order.
Not sure MP office can help
My application is for family so I heard that family application takes longer than single application - do you have any idea ??