The general ideas of your logo designs are great. I prefer a text in black or in a combination of black and a more or less dark grey (with white as background). The colors should be focused on the symbol.
I found a logo draft of you, that I like:
https://logotournament.com/images/entries/4684994586-223.jpg (here I really like the colors and how the are included in the symbol - perhaps it is possible to merge both concepts [in case you do not win the other contest with the logo draft])
2) Again the text: Perfect it is helpful for the layout when you split the text "eventmanagement.com" in two lines, e.g.:
event management.com
A smart integration of the symbol could lead to an improved result.
3) Furthermore it would be fine, when you could make some other proposals for the symbol colors. Spontanously, I like both the black & grey and the dark & light blue version. But the second feeling is a kind of boringness. Perhaps a combination of black and light blue, respectively dark blue and a ligther blue.
Very good, there is a considerable progress to reach a matching result.
Currently I am not sure which color setting I like the most. I will let you know soon. It would be kind when you could try a black/orange, orange/grey and if there is time left also a red/orange draft. Thank you.
On more important thing: Since I would like to increase the horizontal scale of the logo design and also want to set the word "management" more in focus, it could be perfect to increase the letter spacing of the word "event" and to use the new space to increase the font size of "management". Also an overlapping of ".com" might be better.
Main components are the vertical separation line, text in black and grey and .com that overlaps to the right.
Would be fine, when you could incorporate those ideas in your logo draft. Feel free to add your ideas.
For this moment we can work with the blue / grey symbol. Until tomorrow I will think about the other options and will give you a note about the best fit.