Office Agent Error: Your request couldn’t be completed due to capacity constraints. Our team is working to address them.

We have family subscription and we are using Office Agent for several months, from a few days ago we noticed that it has stopped working, it initially was giving this error: "The server is busy, please try again".
After I contacted support team, they said they will work on it and the error has changed to "Your request couldn’t be completed due to capacity constraints. Our team is working to address them."
There is no clear answer from support team, they pass me to each other and no one knows even what is Office agent,

I really appreciate if anyone could please help and direct me to how to fix this issue?