heel lifting

I recently got new edea chorus’ and have had nearly no problems so far. just recently however, i’ve noticed my heel lifting when I do bunny hops and waltz. it’s really annoying and makes me feel less secure, so i’m not able to jump as high. the thing is, when i got these skates the tech pinched in the heel for me because i had mentioned heel lift being a problem in my old boots. i’m not really sure what to do because i’ve already had them pinched in and getting them pinched again isn’t really an option because i bought my skates overseas and they aren’t able to do that where i live. i didn’t experience this issue when i first got them and worked on the same jumps, so i’m not really sure what to do. any suggestions?