This time the problem is different, the problem is on the website side. The subdomain smartinvestor is not registered in any DNS server.
The link to access this feature may have been changed, you will need to contact business-standard.com support and check with them which is the new link to access the smartinvestor. You can see at this link how to contact them.
https://www.business-standard.com/contact-us
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.