I guess you already did this, but just to make sure: could you verify in Cura that the checkbox "Enable retraction" is checked indeed? Then verify in Cura, in Layer view, that extraction is active (=small dark blue vertikal lines). It could have been disabled accidentally, or on purpose to try something, but that you have forgotten to enable it again?
Geert
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gr5 2,002
White PLA is especially bad at stringing. Can you maybe try a different material?
Printing cooler is great but printing slower helps also (and travel speed fast). These strings look very thin and probably are easy to remove.
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