Some probelms in the new version of Zorin os Core

Sorry i only have a solution for the nightmode cause i had the same question and got help from citfta:

Go to settings and then displays. When you click on displays you should get a window with a tab for night light. That is what you want for warmer colors at night

Ps.: And if you click on the taskbar where the clock is a quick select menu will appear where you can opt in/out nightmode the solution above is for the automatic swap with sunset.