Hello, I have recently had an issue with the permission groups. Some users don't have access to the app even though they are in a group that has permission. Once I've added their specific e-mail they do receive access, which is very odd. I currently only have 10 groups or so in my permissions set, I do not exceed the maximum. I've tried not using nested groups (groups within groups) but this didn't help the situation either.
Edit: To add, it's set on a premium capacity so free users can access it.