Alignment and Top bar menu issues

Hi there,

I have three issues I would like to fix if possible:

1. In the top right bar, the currency icons look the same ($ dollar sign). The left one is supposed to be in US dollar and the right one is Australian Dollar, I want to know how to change this dollar icon to the country flag icon so it is easy for the customers. I have tried changing this on the currency plugin but the theme style is overriding the flags and I still cannot change it. See attachment

2. In the same top right bar, how do i remove the dot points next to the list (My account, cart and checkout)? I also want more space between the icon and the text. Please see attachment

3. Also for the category menu, it is not vertically aligned with the logo, please see the attachment. The logo position is lower and the menu looks higher. How can I fix the category menu so that it is align with the logo? Please see attachment

Many thanks for your help and support, I appreciate it. You guys develop an amazing theme!
Monica