I NEVER gave them permission to change app settings without my knowledge or any communication that they were going to even attempt it on my live website with hard advertising going for sales. I turned a feature off, because it wasn't working. They then decided without my knowledge to turn it back on and left it on. That could have cost me lots of money. Thankfully I caught it in the early morning hours and it didn't affect the sale I made while I was sleeping. Testing something is fine on their own end I guess, but if doing it on my website without my knowledge just to get a bloody screenshot thinking it is working...turn it back off JUST IN CASE! This is the worst app, correct that, worst customer service I've ever experienced. I've had rude jerk customer service personal, but I've never had them almost cost me double or triple digits for their lack of basic math skills for a screenshot. I do NOT recommend this app!

They instantly refunded me. //I am extremely upset. I dowloaded this app once, used it for an hour an uninstalled it. I only used the 7 day trial. They still invoiced me 20 dollars for the premium function of this app. I was told that an subscription on shopify ends by uninstalling the app. But booster app still charges me 20 dollar for a service i never wanted and never choose to use. I would give zero stars, if i could.

Great app.
The best discount app. Works well and the support is the best.
I had some issues ut the support helped me fast !!