If HTML editor does not show up on summary area verify whether the editor has been enabled using the admin login to Moodle / Totara. This can be verified by checking the following points (in no particular order):
1. Is the TinyMCE HTML editor enabled in Settings > Site administration > Plugins > Text editors > Manage editors?
2. Is ‘Use HTML editor’ set in Settings > My profile settings > Edit profile?
Webner Solutions is a Software Development company focused on developing CRM apps (Salesforce, Zoho), LMS Apps (Moodle/Totara), Websites and Mobile apps. If you need LMS app development or any other software development assistance please contact us at email@example.com