Its good feedback on the documentation. I will pass this along to our documentation team to improve it.
Regarding the original question about Qlik Sense Mobile user authorization, the app will grand access to the user if Qlik Sense Enterprise has been configured with Site/Core license or if you assign an access token per user. We introduced support for Site/core licenses in our Feb2018 release of Qlik Sense Mobile app so as to ease the administrative efforts of assigning a token per user.
Please let us know if this help and if you have further questions.