Install a Elumine theme to an existing website that has Learndash courses and ensure smooth merging of existing courses with certificates -- 2

I have an existing website with Learndash courses with a Learnplus theme. The Learnplus theme has been causing major conflicts and we want to change the theme and install a new theme Elumine instead. After theme installation, we want to ensure that the courses which are there are accessible and functional so looking for someone with Learn Dash course experience. There is a script for printing a summary of certificates from courses and credits earned. If we can not transfer the script to the new theme, the web designer must be able to create a similar script to print a summary of certificates with credits earned.