Sorry again if I answer you after all this time but I don't frequent the forum much.
If you have Telegram, you can find the addon, the first one, on this channel: @mandrakodi
It is a custom version and the source is the source_file file inside the addon root.
If you have other questions, in the channel you will find references to the support group.
@streamwatcher2013 Can you please help with Makelist for hxxps://www1.solarmovies.co/movie/filter/movies.html. I think CF is preventing code retrieval, but I'm not sure how to identify/confirm if a given site is using CF. -TIA