Edit: The bot accounts are back on their second wave this time from the United States.
2/22/20 I've officially updated this journal without notification as DeviantArt team has acknowledged and warned of the situation publicly on their platform. There are still bot and spam accounts lurking but in other forms such as "FREE MOVIE" posts.
This time under the guise that you the user have not claimed your gift card yet, despite the fact NOBODY HAS OR WILL SINCE IT IS
A SCAM
AGAIN
Mark the note as spam, do not delete it, and send in a support ticket.
https://contact.deviantartsupport.com/en?subOptionId=The-account-is-Spamming-through-use-of-C