what is the meaning of the error "invalid order signature" or

[hsjo12]

Hello,

I have minted simple ERC721 to the kalytn mainnet via REMIX IDE.

Everything is fine except buying a NFT.

When I tried to buy NFT, I have got an error "invalid order signature" or "Your purchase of X failed. This usually happens when gas prices increase or because someone purchased the item before you."

Please let me know why I got this error

Thank you in advance

[SajawalFareedi]

got any solutions?

[hsjo12]

got any solutions?

Well, I didn't do anything, but I just wait for a couple of hours.

Then, it suddenly works for me with only wrapped coins...

Honestly, I have no idea of what was going on.

[sunwrobert]

Closing, let me know if anything else pops up

[Tomsonx232]

I'm having the same issue, don't close this please

[wongzigii]

Same issue while listing.

[onessss]

Same issue while listing too