Users will get disconnected if they join with bedrock.

[15:52:20 INFO]: [Geyser-Spigot] /46.83.190.185:55712 tried to connect! [15:52:20 INFO]: [Geyser-Spigot] Player connected with username ZuluBueffel4602 [15:52:20 INFO]: [Geyser-Spigot] ZuluBueffel4602 (logged in as: ZuluBueffel4602) has connected to the Java server [15:52:20 WARN]: java.lang.reflect.InvocationTargetException [15:52:20 WARN]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [15:52:20 WARN]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) [15:52:20 WARN]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [15:52:20 WARN]: at java.base/java.lang.reflect.Method.invoke(Method.java:568) [15:52:20 WARN]: at floodgate-spigot.jar//org.geysermc.floodgate.addon.data.SpigotDataHandler.checkAndHandleLogin(SpigotDataHandler.java:169) [15:52:20 WARN]: at floodgate-spigot.jar//org.geysermc.floodgate.addon.data.SpigotDataHandler.channelRead(SpigotDataHandler.java:118) [15:52:20 WARN]: at floodgate-spigot.jar//org.geysermc.floodgate.addon.data.CommonDataHandler.channelRead(CommonDataHandler.java:178) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [15:52:20 WARN]: at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:93) [15:52:20 WARN]: at ClientDetector.jar//de.sportkanone123.clientdetector.spigot.packetevents.injector.modern.PlayerChannelHandlerModern.channelRead(PlayerChannelHandlerModern.java:39) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [15:52:20 WARN]: at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:302) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [15:52:20 WARN]: at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324) [15:52:20 WARN]: at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [15:52:20 WARN]: at ProtocolLib.jar//com.comphenix.protocol.injector.netty.ChannelInjector$2.channelRead(ChannelInjector.java:292) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:61) [15:52:20 WARN]: at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:370) [15:52:20 WARN]: at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54) [15:52:20 WARN]: at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986) [15:52:20 WARN]: at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [15:52:20 WARN]: at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [15:52:20 WARN]: at java.base/java.lang.Thread.run(Thread.java:833) [15:52:20 WARN]: Caused by: java.lang.IllegalArgumentException: Name and ID cannot both be blank [15:52:20 WARN]: at com.mojang.authlib.GameProfile.<init>(GameProfile.java:26) [15:52:20 WARN]: at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillGameProfile(YggdrasilMinecraftSessionService.java:200) [15:52:20 WARN]: at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.fillProfileProperties(YggdrasilMinecraftSessionService.java:187) [15:52:20 WARN]: at com.destroystokyo.paper.profile.CraftPlayerProfile.complete(CraftPlayerProfile.java:191) [15:52:20 WARN]: at com.destroystokyo.paper.profile.CraftPlayerProfile.complete(CraftPlayerProfile.java:184) [15:52:20 WARN]: at net.minecraft.server.network.LoginListener$LoginHandler.fireEvents(LoginListener.java:398) [15:52:20 WARN]: ... 33 more [15:52:20 INFO]: [floodgate] Floodgate player logged in as *ZuluBueffel4602 disconnected [15:52:20 INFO]: [Geyser-Spigot] ZuluBueffel4602 has disconnected from the Java server because of Connection closed. [15:52:20 INFO]: com.mojang.authlib.GameProfile@3e87ca16[id=00000000-0000-0000-0009-01f6eae7f8d0,name=*ZuluBueffel4602,properties={},legacy=false] (/46.83.190.185:0) lost connection: Disconnected [15:52:20 INFO]: [Geyser-Spigot] Bedrock user with ip: /46.83.190.185 has disconnected for reason CLOSED_BY_REMOTE_PEER

[16:54:49 INFO]: Checking version, please wait...
[16:54:50 INFO]: This server is running Paper version git-Paper-187 (MC: 1.18.1) (Implementing API version 1.18.1-R0.1-SNAPSHOT) (Git: 0cc2503)
You are running the latest version
Previous version: git-Paper-186 (MC: 1.18.1)

Your latest Plugin from Spigot.
Geyser/Floodgate latest builds

Can you try with the latest release?

seems to work fine

Additional information from geyser/floodgate devs:
AlwaysOnline needs to fix an issue on their end where they don't call a Paper event. The reason it breaks now is not our fault; Mojang changed an API response on their end.