Help with saint2.su script integration

Hi, I'm integrating a plugin from saint2.su so my users can add videos to that video host and they get added to my forum so I don't have any content.

I'm following the instructions on their site https://saint2.su/plugin

but I can't get it to work, I put everything in its place and it doesn't work! As a reference, this site also has view-source:https://simpcity.su/forums/requests.7/post-thread and it works fine, but it doesn't for me, what can I do?

I also integrated the version for only images https://jpg5.su/plugin and it works well when creating threads but it does NOT appear in the section for replying to a thread. Does anyone know why?



mi website



the other site