thanks, I read the article, but I managed to solve the problem on macbook only by installing mac os mojave. the problem but I came back on imac, which first worked, just because I updated with mac os mojave, so I do not know what to do, now does not work the mac, the driver was there, but once the mac was updated the driver was gone, I hope soon a new driver will come out that does not have this problem,
regards