Can't send messages in an archived room

[#1]

Hello!

I am new here. I was just talking to a client yesterday. When I was about to reply again today, this message was shown, "Can't send messages in an archived room". What does this mean? 

Thank you!

Jade

[#2]

Hi Jade,

Thanks for reaching out to the Community with this question. I checked and see that the client took action which resulted in the message room's current status. I won't be able to provide specific details but can confirm the room has been archived due to client's action.

[#3]

I'm experiencing the same thing; what does " the client took action?" 

Are you saying the client violated Upwork's rules or something like that? 

In my case, it's my freelancer who suddenly I can no longer message even though we'd had a good working relationship. It would be nice if Upwork and provide some details for this. In the 2 plus years I've been using Upwork to hire freelancers, I've never experienced this, so the vague "because of the client's actions" is kinda lame for a response.