I've tried uploading using both mcpack and zip files while ensuring that the manifest file can be seen as well. placing each ones on their respected folders (Behavior pack, Resource pack) in the server's file manager. I saved it and restarted the server.
The outcome is that the resource packs and behavior packs didn't load at all. the tutorials on youtube are from another hosting sites too so there's a little help. I also tried changing the "texturepack-required=false" to true, but still didn't work.
In conclusion, I need help LOL, this is my last resort.