Minecraft 1.15.2 has been released toda- yesterday with a variety of bug fixes and improvements, and the Creeper's Lab has made the jump too! Update your game client to be able to join anywhere beyond the lobby!
Two notable changes are taking place for us. First, the Wandering Traders are being disabled across all servers. They have been an ongoing source of server lag since their introduction, for few benefits in return. Those interested in their trades (or their llamas!) will find them available at Moosemart.
Second, a bug fix worth mentioning is about furnace minecarts. They will no longer lose their speed after turning corners, making them useful once again!
The map plugin itself hasn't been updated yet. While you can still view the maps as usual, they won't show player positions or new changes until its author has a new release available. This will probably take a few days.
UPDATE: The maps are back in working order!