I wrote a mail asking for some job to be done at the earliest. I was replied with "I'll do it this afternoon, problems." I don't understand the meaning of that extra "problems" at the end. The person was British.
How early in the morning did you send the e-mail? Perhaps the person who replied would have started it straight away, and guessed that they would have finished it that morning if they had, but they can't start on it until the afternoon, because they have problems to deal with, and they must deal with those problems first.