The last time I withdrew I had no issue with my withdrawal and the same as others I have also withdrawn from the site.
Did you send an email to support concerning this issue? If no then try sending a mail to them so that they can check and tell you why it is that way.
I emailed support, waiting to hear back. It's happened twice now, I check the transaction on the blockchain and the fee is too low, right about 500 satoshis. The first time, support said this is a highly unusual occurrence as perhaps there was a dramatic dip in mining fees at the time of my withdrawal (and I got reimbursed, to be recouped when the transaction eventually clears), but because it happened again on my second most recent withdrawal attempt, it's looking like that might not be the reason, it's curious. I've used the same BTC address with no problem like this in the past.
Has the withdrawal been up to 24 hours since you requested it? I actually don’t know the main cause but the transaction fee on mempool is very low with both high priority and low priority fee being 3sats/vB.
You’d just have to wait for the support reply and let them get you the necessary details like they did the last time you experienced the same delay.
By the way, has the withdrawal been up to 24 hours?