Drop down for city not showing

Hi,

I installed the plug in and it is not working?

the city drop down for Lagos, Nigeria is not visible on my site. I read your forum and saw the discussions. However none of them worked.

Tested https://statesandcitieswc.ml/checkout/ and saw how it looked but for my website: https://myminibar.ng this is not visible please help.

The page I need help with: [log in to see the link]