During the past few days we've been experiencing a lot of issues with DarkRO's email accounts (Sending & Receiving email), this was due to the partition where mails are stored was full to the last byte and we had a system update break down half-way through (due to the above mentioned reason)
All email accounts should be fixed, so the website's account registration/recovery, forum's signup and every other email-related feature should now be fixed.
This affected donation's emails too. I replied to every single email I received, so if you sent an email and didn't receive a reply, please do send it again (I know a few people sent email and it got rebounded)
Sorry for any inconveniences