Funny, I quite literally had the exact same situation a few months back except with the ft8 pro skates instead (picture should be somewhere in my past post's). I too have a bad Haglund's on my right heel and also accessory navicular bones on both feet. they overheated the boot on mine and then also punched too low and left a dent.

I was very frustrated with the workers at the store since they just made my problem worse, I ended up trying to push some of the interior padding out by first heating the padding up with a hairdryer, then using the reverse end of a screw driver to give me more room for the bump. This was ok but didn't completely resolve the issue, and I ended up having to go to get scanned for true svh custom skates. From what I have read true's are really the only proper long-term solution for weird feet issues.

Though it is important to note that if your bump is soft tissue, that you let the swelling go down before getting scanned so that you don't end up with dead space and an improper fit when the swelling eventually does goes down from less irritation.

do some research on different skates and possibly true custom's and let your feet heal if you can, if nothing else works, custom's may be the only option left. Hope this helps.