I have frequent issues with Ntflix, no other channels. I'd like to delete and reinstall. If I do that will it maintain its histroy of what I've watched and where I am in series? I'd hate to start over.
Your account data is kept in your account on Netflix's servers. That's why you can log in on different devices and still have access to everything. As long as you log the new installation back into the same Netfix account you shouldn't lose anything.