Yesterday I uploaded clean openATV 7.4, restored the settings and channels, then put oscam into usr/bin, gave permissions and launched oscam, everything worked. Today I turn on the tuner and oscam no longer works 🤷
Edit.
Today I downloaded the latest version of openATV 7.4 cleanly and now oscam works even after a restart, I don't know what the problem was, but the important thing is that the problem is solved :)