@Javier, Thanks for pasting in Q&A. Please try the following suggestion to see if it is fixed.
1.Ensure the Intune license is assigned to user2 which Rahul mentioned.
2.Are all the two policies assigned to user group instead of device group?
3.Login user2 on the affected device, and go to Setting,>Accounts>Access work or school> find the account click info and then click sync to see if we can get the policy.
Please try the above suggestions and if it is still not applied, please check the device status on the second policy In Intune to see if the policy applied to the device and if any error occurs.
Hope the above information can help.
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