As you didn't mention that which SSL you enabled (Like Splunk Web, Indexer inputs) so here I am assuming that you enabled Splunk Web SSL. After enabling SSL on Splunk Web, you need to restart Splunk service and after that you can use Splunk web using https://<server ip>:8000.
If you want to disable Splunk Web SSL then change below configuration in $SPLUNK_HOME/etc/system/local/web.conf
enableSplunkWebSSL = 1
enableSplunkWebSSL = 0
And restart Splunk and then you will able to access Splunk on http://<server ip>:8000