What version of joiplay do you have? Maybe you need an update.
JoiPlay 1.20.027 (Public Beta) and Plugin Updates
Hello everyone! I wish a happy Eid al-Fitr to all who celebrate it. These builds bring bug fixes and small improvements over the latest alpha builds.
RPG Maker Plugin comes with some risky changes and built with a new version of toolchain so there might be some undetected bugs.
Downloads
JoiPlay 1.20.027:
MEGA
Ren'Py Plugin 8.0.3_7.5.3_010:
MEGA
RPG Maker Plugin 1.20.28:
MEGA
Ruffle Plugin 1.00.10:
MEGA