Login Issue

We are running an after school program and we have purchased our ME licenses since August 2023. For some reason today we are unable to login on our club's devices. We get the error indicating to make sure we are signing in with our organization's account which we were. The odd thing was that when I logged in from a device we do not usually use at our organization it logged in fine. Same with my phone and personal tablet. Is there a maximum time we can log out and log in a student even if we have purchased official licenses? Since we have an after school program each day we have different students coming in so we have to log them out and in again. Thanks, Pantelis