DezLin Retail review for Advanced Wholesale/Discounts

I downloaded this app 3 days ago. This is by far the worst app I have ever downloaded on the shopify app store because: - the instructions are beyond unclear. It seems like the perfect app on the app store but in reality the functions don't work and setting them up is very confusing - the support is off on vacation or something... I have emailed their support multiple times every day for help and I haven't received one response. Very confused about this since every review on this app is 5 stars and mentions immediate support... I am writing this review to save anyone the hassle of downloading a poor app that will cost you more time than it will save you. I am also hoping the app will see this and finally respond to our emails as their app code is still installed on our store and is causing errors so this is a very urgent issue we need resolved..