A problem with my bronze cloth upgrade

Hi all people. Several months passed since the last time I played the game, so, after all the updates, I found myself online again. And then, when I wanted to upgrade my Pegasus cloth (level 7), I found this:

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I don't remember that blue stone replacing the old "pegasus upgrade stone level 1-10"... so... where can I found these new stones?
Any kind of help will be welcome. Thanks in advance and sorry for my bad english.

You can buy it from private shops or drop in dungeons.

You exchange your old token for pegasus for the new one with the npc who sells gold cloth.