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It happened to some some days ago... yesterday I was able to see the 'harvest' option available and in my case a tiny ammount that has no sense to harvest due to near 50% fees...

Do you still pay fee to harvest?

I've not tested today but yesterday (using the slowest/cheapest route) it asked me for 0.01$ (eth gass) to harvest 0.02 USDC... so I'll wait till I have more to gather to see if fees lower.