Hard to maintain, frequent bug regressions, bad support

Pro:
* Looks nice
* Many features

Cons:
* Lots of new bugs with every (minor) feature. Needs lots of testing on staging site before doing an update. They seem to very little (automatic) testing on their own.
* Interferes highly with the rest of the site (embeds its CSS/JS everywhere)
* Very bad support: You say I have problem A, I already tried B. They answer please try B. You write: Have you read my first mail? I already tried B. They write: Can you give us admin access to your e-commerce site with thousands of customer data. You say: How would that help with problem A. They go back to: Please try B. Drives you totally nuts – this happened to me in lots of support requests. Horror. And I am a software developer myself, so I am able to describe a problem in a technical clean way.

So at first I would give it 5 stars. But having used for 3 months it is a total pain to maintain.

Besides this, lots of the reviews here have a lot of common blabla and look like fake reviews to me.