Products show default “Sale” label without any conditions set

Hello everbody,

I have a weird problem, where products that once had a different, now not existent label (deleted long time ago), showing the default orange “SALE” Label.

I deactivated all labels to make sure it is not one of the active ones and when I do that,every label is gone except that “SALE” Label.

This is only on some prodcuts where I think, I once added manually a label in the product section in the past.

If I look at the product now in the backend there is no label ticked and no “rule” that I created makes a default “SALE” label.

What could that be and how can I check where that label comes from and deactivate it.

Thank you in advance.
BTW: I use the premium Version of the plugin

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