please ensure there are NO jar or mods installed that are for minecraft version 1.8.0 on a 1.7.10 server and that includes the forge universal jar.
also, how is this addressed?
[20:21:34] [Server thread/WARN]: To start the server with more ram, launch it as “java -Xmx1024M -Xms1024M -jar minecraft_server.jar”
please tell us what is your entries for ‘Memory Allocation (Heapsize)’ for both Xmx and Xms?
also, did you open this port? as it is closed by default:
[20:21:39] [Server thread/INFO]: Starting Minecraft server on 0.0.0.0:25575
thanks and best regards,
tNt