Netflix doesn't limit the total number of devices you can log in on. While you can register multiple devices, only a limited number of devices can stream simultaneously, depending on your plan. Even if you've reached your streaming limit, you can still download content to your mobile devices through the Netflix app. Watching offline doesn't count toward your simultaneous streaming limit.
For more information, check out the tutorials below:
Netflix Download LimitMore tutorial:
How to Watch Netflix on MacTools for PC:
Best Netflix Offline Streaming Tools &
Watch Netflix Offline