IAP purchase not working after latest update

Hello all ,
i have an application on playstore with In app purchase system , i updated it on playstore and subscription system is not working in it after yesterdays update. kindly fix the issue. earlier it was working perfectly.

My app link : https://play.google.com/store/apps/details?id=io.kodular.dafaqdevelopers.IBPS_Exam_App


For a moment I thought I was doing something wrong

But I see that it is not like that

i dont understand you but IAP is still not working in my app.