Joy Loyalty Program & Rewards

This is a very very bad experience for me with the app. Reasons for 1-star review:

- The app still has some UI bugs (even in the demo store). And the open with hash URL did not work when put it in the store navigation (I had to reload the page to get the widget opened).
- I granted permission for their developer to fix the bugs. And this is when things got really bad. First, they turned on "Auto open the widget" without my approval. The referral pop-up also automatically appeared with a bug that stopped customers from exit the annoying pop-up.
- And yesterday, they edited the header.liquid file in my theme. The edit made customers unable to click "Add to cart". This damaged my business. I cannot take it anymore.
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The support is responsive. But their tech support needs improving.