Serverwide Resource Packs
Once you found the resource pack you want on your server you need to upload the resource pack to a website and get the direct download link of it. You can use this website.
Click “choose file”, find your file and then click upload. Make sure the file you upload is a.zip file. A file can easily be made into a zip file by right-clicking the file, picking “send to” in the dropdown menu and then choosing “compressed (zipped) folder”
Once done you’ll get your download URL. (save this URL)
Now go to your server and open “file management” then open “file explorer” in the dropdown menu.
Locate “server.properties” and open it.
Find “resource-pack” and paste your URL in the box.
Now restart your server, feel free to open a ticket if you need any assistance.