I decided to keep this batch, but boiled 0.55 kgs of sugar in 700ml of water, cooled it and added to the fermenter.
The gravity was already at 1.010 (i pitched 48 hours ago). After adding sugar with water it went to 1.020.
Remember that the OG was 1.024.
My thought was that since it is all done, let's learn what happens from this.