Your plugin sounds wonderful. I have been looking for something like this for a while and found your plugin but I am having an issue with loading the plugin. Currently my server is 1.16.5 so I tried every 1.16.5 upload that you have and all with the same issue. I'm getting the following error:

[06:38:49 ERROR]: Could not load 'plugins\fabric-branders-spawnermod-1.16.5-1.1.1.jar' in folder 'plugins'
org.bukkit.plugin. InvalidDescriptionException: Invalid plugin.yml
at org.bukkit. plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:178) ~[patched_1.16.5.jar:git-Paper-786]
at org.bukkit. plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:160) ~[patched_1.16.5.jar:git-Paper-786]
at org.bukkit. craftbukkit.v1_16_R3. CraftServer.loadPlugins(CraftServer.java:393) ~[patched_1.16.5.jar:git-Paper-786]
at net.minecraft.server.v1_16_R3. DedicatedServer.init(DedicatedServer.java:269) ~[patched_1.16.5.jar:git-Paper-786]
at net.minecraft.server.v1_16_R3. MinecraftServer.w(MinecraftServer.java:1069) ~[patched_1.16.5.jar:git-Paper-786]
at net.minecraft.server.v1_16_R3. MinecraftServer.lambda$a$0(MinecraftServer.java:291) ~[patched_1.16.5.jar:git-Paper-786]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_271]
Caused by: java.io.FileNotFoundException: Jar does not contain plugin.yml

I have 12 other plugins but I don't think it's an interaction problem but if you do, I'll list them if needed. Thank you so much and I am looking forward to using your plugin!

You have a bukkit server and this is a mod for forge/fabric so it will not work. They are two very different things.

Do you have a mod like this that will work with a paper server or know of a mod like this for a paper server? Thanks!

I have really no idea, I'm only familiar with forge/fabric.