Hello and thank you in advanced.
We have two PowerApps that have been moved from our Default environment to a Production environment. Both apps use standard connectors (eg SharePoint Online lists, Office profiles, email interaction) and features, nothing requiring a Plan 1 or 2 license. Although the creator(s) have Plan 1 licenses for other purposes.
The apps have been shared with an Office security group containing all the users. For additional testing I shared one of the apps directly with one of the users.
In addition we added the security group to the environment role of Environment Maker (I believe this isn't necessary, in theory).
When using the PowerApps via web interface the user group can access them without any issue. Only when using with the mobile PowerApps app are they prompted to Start a free PowerApps premium trial.
All users have PowerApps for Office 365 as part of their Office and / or Teams existing license.
Please advise if you know how we can resolve this. There is nothing I've seen or read to indicate this is standard behaviour.