Can't access any modems

I can’t access any of my modems. When the dashboard page first loads It shows how many online and offline devices I have correctly. If I go to the groups page its shows I have 0 devices in each group. This would happen occasionally before and I could fix it by backing out and trying again but it is happening every time now. If I go to devices it shows 0 devices as well.

About which way of access do we talk? Mobile app? Web?

If mobile app: Which OS and which App version?