Hi There is no info about this in our Help Documentation. https://ploi.io/documentation/search?query=Restrict
I searched a lot on the Internet and tried out, nothing works except below https://www.cloudpanel.io/tutorial/how-to-restrict-wordpress-admin-access-by-ip-address-with-nginx/ So, please add this info to our https://ploi.io/documentation, if you have time.
Thank you Ramki