I've searched through the forum and followed other people who have posted issues not being able to connect to a server, but have not found one that works for me. 1) I am running on ubuntu 18.04 64bit 2) I have the latest spigot-1.15.2.jar 3) I have not changed the defaults in the server.properties (i.e. the server line is blank, whitelist is false) 4) I know the port forwarding is working because I ran pocketmine on 25565 and I can connect to it (and then of course I stopped it). 5) the server seems to startup just fine and is waiting for connections (java -jar spigot-1.15.2.jar) I have also run it with other options adding more ram and such. All seem to startup fine, waiting for connections. 6) I'm trying to connect using an ipad and Windows version of minecraft and both are kept up to date. It says "Unable to connect to world." and is also not indicating on the server list that it is live, but I try anyway. Any help would be much appreciated.