Hi

As you can imagine it's quite the overhead to manage 70+ coins, so sorry that we couldn't get back to you after a few hours of you contacting us (we did respond within 24h). The truth is we had a lot of trouble with the DIEM wallet, our initial (but wrong) conclusion was that it was the old version, which I communicated as such. After further investigation the problem was wallet related and it did not sync the blockchain properly. We downloaded the QT, loaded our priv keys in there, and manually tried to send you the transaction. It worked.
After 2 emails, one of which I asked you your DIEM address to send it back, not "much complaining" was necessary at all to get your DIEM back.