Minecraft Java Edition Server Administration – Console Message: Set Score of Cat for Player [Player GUID] to #

When you shut down the server, Minecraft unloads all chunks. When you start it again, it begins with no chunks loaded, and loads chunks as players log in. Because it hasn't 'looked' at the chunks with the world anchors in them, Minecraft doesn't know that they need to stay loaded. So long as a chunk is loaded, a world anchor can keep it loaded, but they cannot cause a chunk to load if it isn't already loaded.

Docm's advice is about the distance between two villages. Your target is to build one village and another one far enough from the first to be counted as another and not the same village.

As the distance of your villages is 75 and the minimal distance between villages needs to be at least radius+32 Blocks, while radius describes the distance between the first village's center and the furthest door of it, your villages shoul be far enough from another.

There are now two error sources: Either you have got any door between these two "villages" which connects them to one large, or you are too standing too far away from the not-working platform.

In the first case, destroy the doors in the middle. If you haven't got any doors in between these villages, just try to play/stand/run whatever between them.

Depending on the servers configuration there is a limit of blocks that may be between you and the mobs (usually about 60-80 blocks). If you are too far away the mobs chunk stops working. This means, the mobs are not running around, not spawning anything and for sure not breeding anymore.

So, to get your farm working properly, make sure that all chunks of the farm are loaded. Which you may either achieve by being between them or putting one of your friends at he bottom spawn layer and yourself at the upper.

Depending on which plugins are installed on the Server there may be even a block or something called "chunk loader" but one of them at the bottom-spawn-area and your problem is solved.