Does anyone have or know of a working CrossOnlineCount plugin that is compatible with PMMP? Cause I downloaded the .phar and it doesn't work.
Are you sure that this 4.4 KB plugin doesn't work? If so, create an issue with the error description and errors/warnings on the console. here: https://github.com/jasonwynn10/CrossOnlineCount/issues
do you mean sth like this https://github.com/robske110/SignServerStats/tree/master/examples/LinkPlayerCount?
then it's probably not what you wanted. that plugin just combines player counts of multiple servers. You want a slapper ext plugin which transfers player if they click a slapper?
WHAT doesn't work? What error do you get? Maybe your pocketmine version is old, maybe your slapper version is old... How are we supposed to fix/update the plugin, that is already up to date, without knowing what issue you have?