Have 11/10 outfit slots

Hi, I had an issue where I'd already acquired 10/10 slots for skater outfits, but I had the option pop up again when entering the customization menu. I somehow thought it might work but of course it does not lol, now all that happens is it replaces my first outfit slot with a mishmash of the last slot and default clothes.

I believe it can be reproduced by going into the customize menu and for a split second the prompt will appear which lets you "buy" another slot.

Now I have 11/10 slots and the same thing happens every time I log in, where I have to redo slot 1 which stays til I log out.