I verified my ETH address in a matter of minutes. The dev is often available on Discord and will give you a message to sign with your address.
You don't risk anything by doing this so it's a no brainer.

I think I'll also burn my tokens for the third swap. This option is open until the end of May. Even if the old dev return miraculously he can't be trusted so I see no value in holding PoS any longer.

After communicating with the DOU team since the onset of the 'resolution' for holders of PoSToken, at first I was unsure, then after coming back and seeing the progress and direction, I was pleasantly surprised.

Like said above, real-time response, and quick help and direction as to what steps were needed to secure a spot as a holder of PoSToken back at the snapshot dates.

I'm impressed, and I saw there is only 30 days or so to submit, I'd suggest getting your info in to secure your DOU before the last minute.