Hello,
1/ You should have enabled the location checkbox -> https://prnt.sc/qT1LfEN6ueCU
2/ If you have chosen product source from real orders your custom locations will not work -> https://prnt.sc/xXo6Tc9OVGez
3/ Did you set flags here in the way and order we provided in example -> https://prnt.sc/_Eqmr9CTXU5M
If you still have issues please, provide us admin access to check your settings.
Regards