Will not recognize subscription

I have tried 3 times to renew subscription. Works for 1 day then tells me I do not have active subscription. iTunes shows as active but with dates wrong - eg, 6/20/17 - 6/20/17 instead of 6/29/16 - 6/20/17. Contacted iTunes who told me that they just sell the app. If it is broken WWD must fix. iTunes has refunded me each time but cannot address problem. Contacted WWD who said they just sell paper and desktop online subscriptions and cannot help with app. Rep was to have IT call me - of course that has not happened, nor have I gotten any response to app support e-mails. This is RIDICULOUS! PLEASE HELP

kbmnj about WWD: Women's Wear Daily, v1.6.5