Hello! I have seen more discussions about the same issue but I am writing a new post just in case that someone found a solution or even to maybe highlight that for most people it is not yet solved. When trying to access trade offers (I trade a lot so I receive many trades) I keep getting this message for more than 24 hours:

Sorry!
An error was encountered while processing your request:
There was an error retrieving your trade offers. Please try again later.

Is it the same for you? Have any solution?