Hi there, sorry for the late reply
It might not be the most accurate but Kolbeinsey is definitely 2 separate islands now.
In this video, Icelandic coastgoard approach the island where it is seen as 2 small skerries
https://youtu.be/SuaBPQ8HlBQ

And in this video, someone goes up to check if its still there, which it is seen as 2 small skerries as well. They also posted a better picture of Kolbeinsey on their twitter page, also linked.
https://youtu.be/hr03xF08qoU
https://web.archive.org/web/20200817171526/https://twitter.com/tomscott/status/1295407594601959424
(archived, as original tweet seems to be deleted.)