Poor service – Fraction Calculator + Decimals Review

I subscribed for a 1.99 a month to start. The very next day the features were locked again telling me to subscribe. I reached out to support and they took weeks to respond. The issue still isn’t resolved. Every time I go into the app the decimal option is locked and doesn’t recognize my subscription. Deleting app and cancelling subscription.
Review by Colin McLeod on Fraction Calculator + Decimals.