I have had tongue rubbing sores on my ankles for every new pair of skates for as long as I can remember. It happened on my SP Teri's and it happened on my Jacksons. Sometimes it is just one skate, sometimes both. Usually the outside of the ankle, but sometimes the inside, too. For me, it usually goes away after a few weeks when the skates are broken in. It depends on how much you skate and your intensity, of course. I got my new Jacksons at the end of June and I was skating every day for at least 1-2 hours a day and after 2-3 weeks, it didn't bother me anymore.
I used to sometimes wear the gel sleeves, but I disliked how sweaty it made my ankles feel and I thought they took up too much room in my boots. Then I lent them to someone and she lost one. For my last pair of new skates, I used a make-up pad in that spot. After a few uses, it tore up the make-up pad. You could also try working with the leather on the tongue and on the ankle to try to make them a little softer and more flexible in that area.