What was wrong with the first form of government in the us?

Answer 1

Some of the obvious examples of things most people would consider "wrong" today are:

1) protecting the institution of slavery and the slave trade;

2) permitting discrimination based on race and other factors;

3) preventing women and non-whites from voting.

Answer 2

Your question calls for opinion, but I think what you want to know is what did the drafters of the Constitution think was wrong with the Articles of Confederation. The answer to that is that they went TOO far in decentralizing power and left the central government unable to address matters in its area of concern, such as national defense. The Constitution was intended to remedy this, while still having a government of enumerated powers and with important rights reserved to the people and to the states.