No matter if you have experience or not, you can work with them. The main thing is not to forget about the tests. It's very important to split the bundles and control the result. The support team is friendly, you can write to them calmly. They do not refuse my request to change the application, they even gave me the creatives and we easily negotiated an increase of the bid. In general, communication with the manager makes the work comfortable, and sometimes it affects to profit ( for example, you can not increase the bids by yourself)