When I started working for them, the company wasn't perfect, it had its flaws, but they were fair and treated their teachers decently. Over the last few months, the situation has totally changed.
1. They try to chain you down, but at the same time they don't give you enough classes to fill your empty slots. Instead of having fewer teachers with a lot of classes, they prefer to have a lot of teachers - apparently they are constantly hiring - with a few classes each. The result is that, even though the hourly pay rate is good, the overall wage totally sucks.
2. You cannot take days off without being punished. They will either take one or two of your regular classes away or they will detract part of your wage.
3. If you get a Negative Feedback, you are done. They don't fire you, but maybe it would be better if they did. If you get ONE NF, they will not give you any more regular classes. They might take away some of your regular classes. They will pretend they are open to discussing the NF with you, but it's all a lie. They will let you explain, state your point and so on and so forth, but in the end they are going to give you the feedback anyways. All of this for ONE negative feedback in months.
4. Continuous change in management. The supervisors change and so do their opinions about what needs to be done. If your new supervisor wants you to do A, but your old supervisor had told you to do B, B doesn't count anymore. Too bad they don't tell you right away, but you will find out yourself.... by being penalized again.
5. The platform. It's not the worst I have seen, but they are still developing it and it freezes and lags. And guess what, if that happens, the fault is yours! Even if you can prove that your internet was totally stable when the platform froze, they won't care. It's your fault and, guess what again, you'll be penalized!
6. At times it seems that they want you to teach "Chinese English", instead of proper English pronunciation. They complain about the pronunciation of certain words - even if you're a native speaker and they are not.
I could probably go on, but I guess this will suffice.