need help with zoom g2.1 nu

i have le4 with zoom g2.1 nu
at first run everything was ok and zoom asio shown in vst list but after few week i start
le4 and recieved a message that i/o is not active
and now when i open vst list zoom g series asio doesnt show
i try to uninstal and instal again zoom asio driver but nothing have changed
what should i do ?