They are saying I can't as I can only have 1 payment break of up to. 6 months and I have had mine

I am in an iva I was made redundant last year and had a 1 months payment break then got a job, Im now in my 4th year of payments I have only missed the one payment,i was put on short time hours in jan then 1 week later was finished I have asked for a payment break as the iva had a provision for up t...