I see (that) you are busy = present tense.
“I see that you’ve been busy” possibly translates as Βλέπω ότι ήσουν απασχολημένη or Βλέπω ότι έχεις πάει απασχολημένη = present perfect tense
English Translation
I see you’ve been busy.
That’s how I read it too, Alan.