The most basic disadvantage is that they take money, but they don't do their job. If questions arise, you will not get an answer from them, but only a la specialists will carry some nonsense in the best cases, and usually interrupt to shout and swear. I do not advise you to cooperate with them, it is a waste of time and money. People are absolutely uncompitent and boorish. CEO type and Web Impulse are the same office, so it's better not to work with them, money is wasted