I install ssl certificate on host.dighiexpress.com & it work proper & when i visit website it show secure but when i add port host.dighi.express:10000 for webmin access it does not it error.
import note i already copy certificate to webmin & usermin but all does not work properly.
I am not sure if it is the cert that you have installed which is working properly. When I visit the URL which you have provided (good idea, BTW, that made it easier to help you) I see the SSL icon / padlock icon but this is due to a Cloudflare certificate rather than the one that you had applied.
When I try and visit URL:10000, I get a timeout probably because of Cloudflare. It is certainly possible to use Cloudflare with Virtualmin but you must first configure Cloudflare correctly. On a new Virtualmin server, it might be simpler to get everything working correctly first and then optimize for performance with Cloudflare etc.