I noticed that a few weeks ago that you can only archive. I am going to assume its in case there is trouble in a deal the mods can retrieve it. Archive acts the same as delete as far as visually.
Hello,
Direct messages could not be deleted before; they could be "Left," but that caused more confusion and problems for members than it helped.
The option you're looking for is to "Mute" the conversation that you want to remove permanently from your inbox. Muting serves the purpose of both leaving permanently and deleting.
Learn more:
We hope that helps.
Please read the guide that we provided; it explains why and it also explains how the new options work.If you could further elaborate what problems caused, since self-explanatory, worked great.