At first I used 5 minutes for testing.
I would try some other troubleshooting options just in case, like double checking the index (in my test environment it went to index=main), and the connectivity between the Splunk node and the RSS endpoint.
I deleted my test environment, but if there's no option to set index through the UI for this app, it may have to be set in the inputs.conf file the app creates.
If this is still overwritten, it may need to be set with a transforms.conf index override (see this answer: https://answers.splunk.com/answers/100609/redirection-to-different-index-using-transforms-conf.html).
Hopefully the first option works.
I saw that link in the top-right hand corner of the page you linked to in a previous comment -- It looks like a sort of global status feed for Webex, and it's in an rss format.
There's a black and white RSS icon in the corner.
Ya.I see that .I tried using the same one but did not get data into Splunk .Should I create a new input or disable and enable the existing ? .What settings you have made in the input like time interval ,Include only new or changed entries,Convert HTML to Text
What is the URL that you have used? .I used this URL https://status.webex.com/service/status?lang=en_US . If you see the URL that I sent ,you can see something like webex meeting , webex and it shows status operational .I am trying to get that data .Is that same as the URL you sent me or is it something different