I'm developing a Custom Form using PowerApps in my 0365 SharePoint tenant.
I've created the app and it's working, however when a guest user tries to use the Custom Form (by clicking NEW from the SharePoint List) they get the following error 'You need a current plan or trial to use Power Apps.' and then a button to 'Start a Trial'
Based on what I've read, including the Q/A's here https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/customize-list-form it sounds like a guest user should be able to USE the Custom Form, just not edit it, as answered:
Q: Do I need a Power Apps license to create or use custom list forms?
A: Guest users can use custom forms. To create custom forms, you need an Office 365 plan that includes Power Apps.
Also, following the documentation here https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/share-app '
What license must be assigned to my guest so they can run an app shared with them?
It says that for a SharePoint customized form NO PA (I assume Power Apps) licence is required.
Am I missing something? The 'App' is a multi screen form with standard connectors attaching to SharePoint lists only (no premium connectors). I've tried both external guest uses invited by email, and creating guest users within the tenant.
I've assigned the Power Automate Free Licence to the users, and made sure they have edit access to the List the Custom form belongs to.
I've also tried replicating the issue in a second tenant, and it seems to work there, so I'm wondering if there is a tenant setting somewhere that is preventing the Customized Lists from working?
Any help at all would be really appreciated.
