GST Composite to regular changed automatically

Vijith Sourav (Working as an Senior accounts executive )   (81 Points)

14 June 2018  
Dear Experts,

One of my client GST registerd as a composite register. now it is changed as a regular from 1st April onwards, We didn't do any return for April to may now lot of interest will come. so can anyone help us in this regards

Note : our yearly sale is below 30 Lakhs only

Thanks in advance