Transaction not Cancelling on Mintable

I have attempted to make a purchase on Mintable. The gas was extremely high so I tried with a low gas but the transaction did not go through. I’ve been trying to cancel the transaction for about 24 hours now to no avail. I have increased the gas several times. I have tried to make other transactions as well. Everything is pending. Nothing will cancel. This is extremely frustrating!

Can someone please help?