Hi @mikyvienne
It easily means that your Hipad X does not have any Widevine CDM security level implemented. So the major streaming companies do not allow any device without this to stream.
You can check this by downloading DRM info here. Or type drm info in Google play store. Open the app and look for Widevine CDM info. You will see the security level underneath. L3 = you can watch 720p. L1 = Max 4K resolution to watch
This screenshot was captured from my Qualcomm version of Hipad Pro. This one gets Widevine CDM L1 level. Which means this device can watch 4K resolution streaming movies.
If you plan to watch any streaming movies from these major companies, you should look for Qualcomm devices. Check spec of CPU of the Android devices before placing order. There may be some MTK or Unisoc devices that have Widevine CDM. But as of now I have no information about this before.