Steph44:
When i insert 50cents, i have a green led that lights up, so that means it is ready to move the 1st servo...but if i want to insert 80 cents it doesnt let me move the 2nd servo.
In case you didn't read the link I gave you:
It is a bad idea to keep track of money using floats.
Use an int or long instead, and store the amount as cents.
Also, why all the delays in your code? In particular, why delay for two whole seconds in coinInserted()?