Problems logging in – Infinite Campus Mobile Portal Review

I’ve been using the app for a while since it is the system that my school uses, but not until recently have I had any major issues. I have deleted and redownloaded the app several times in attempt to fix the the issue, but every time after trying to log in it pops up that it cannot authenticate user. This has been occurring for some time now. Please help.
Review by lyjtfztjskgz datatkdaj. frcdv on Infinite Campus Mobile Portal.