Loqseq Reference Styles Installation

[needhelp2024]

Hi,
I've been trying to install "Reference Styles" all day, but unfortunately it's not working. Can someone please explain to me step by step what is meant by "yarn && yarn build in the terminal to install dependencies."?
I have installed the plugin in Logseq, can also call up the menu, but the changes are not transferred to my text: neither the color nor the icons change.

Thanks for your help!

[m-kobel]

Same here...