MasterStudy LMS PRO 4.4.10

- **Fix**: If there are no popups or signup forms on the page when a guest tries to sign up using a referral link, the referral link option does not work.
- **Fix**: The certificate tab is not displayed for a student.

- **Enhancements**: Added filter on instructor names in Certificate builder for admin.
- **Enhancements**: Added ability for instructors to create certificates.
- **Enhancements**: Added a separate page with certificates that instructors have created themselves.
- **Enhancements**: Added certificate list in the admin panel, where admin manages all certificates and instructor can see and edit delete only certificates created by him.
- **Enhancements**: Added filter for changing custom field in certificate builder.
- **Fix**: Videos embedded with iframes in lessons and account emails using the Email Manager aren't displaying correctly.
- **Fix**: Certificate error is highlighted in Course Player when Query Monitor is enabled.

- **Fix**: Students who have purchased a pre-ordered upcoming course can take the course via Curriculum.