This morning (15-April-2021) more earthquakes where recorded far north of Kolbeinsey island. This activity is probably outside of Kolbeinsey ridge but I don’t know the name for this part of the north Atlantic ride. Largest earthquake took place at 09:29 UTC and had a magnitude of mb4,4 according to EMSC. Information about the earthquake can be found here.
It is not possible to know what is going on at this location. It is extremely remote and under 2 to 4 km deep ocean. If anything more happens at this location it is only going to be detected by seismometers.