Unable to buy more runes.

I'm trying to buy runes for my PBE account but i keep getting an error saying "An Error Has Occurred, You have attempted to purchase or already own more than the maximum amount for this item." When I go to my runes though I don't have any of the rune I wanted to buy but i have some runes that have 30 to 40+ runes. I was wondering if there is a way to fix the runes that had more than 9 runes.
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