Why doesn't the subdomain from ISP Manager?

Hello, I bought a VDS and installed it there ISP Manager Lite 5.
Very long

Purchased your domain, CloudFlare screwed (for ssl), specify an IP VDS at cloudflare in records. We went to a panel ISP Manager to fasten the domain to VDS. Himself pointed the domain of NS Ki, ip and so on. Domain prekratila if I go there, everything works.

After, I wanted to add and subdomain (name. forum.my-website.ru). Went to ISP Manager and just as I tied domain, tied to a subdomain. Next, I went to this subdomain, however, wrote Chrome DNS_PROBE_FINISHED_NXDOMAIN.

And the most important! When I entered the IP of my VDS in the address bar, I opened a subdomain forum.my-website.ru


Briefly

Directly on the subdomain to go items, and ip VDS you can go.

Why?
April 19th 20 at 12:32
1 answer
April 19th 20 at 12:34
Solution
For a subdomain a-record is not done in CloudFlare.
Added, but the same thing. - tabitha_Dooley66 commented on April 19th 20 at 12:37
@luis 5e99b0afc3707005271129.png all that, right? - tabitha_Dooley66 commented on April 19th 20 at 12:40
@tabitha_Dooley66, www work? - luis commented on April 19th 20 at 12:43
@luis, www.my-website.ru works. www.forum.my-website NOT working. - tabitha_Dooley66 commented on April 19th 20 at 12:46
www.forum.my-website you did not added in CloudFlare
Usually www. add only to the main domain. For subdomains it is not needed. - luis commented on April 19th 20 at 12:49
@tabitha_Dooley66,
Add a-record www.forum
Only what for it to you? - luis commented on April 19th 20 at 12:52
@luis, Thanks, problem finally solved! - tabitha_Dooley66 commented on April 19th 20 at 12:55

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