I am trying to buy a token at the listing time, but my transactions get rejected with the error "TRANSFER_FAILED" while other transactions at the same time are successful. I have tried high gas limit and high gas price already.
I was looking many people use swapExactETHForTokensSupportingFeeOnTransferTokens() while I use swapExactTokensForTokens(). Is there any difference between the two functions? Also, could this be the cause of the rejection of my transactions?