My transaction have not gone through for a day. After checking status they were not found but I waited. Gwei was set to fast. Tried sending again but it wasn't allowed. It takes days now or what is the problem?
I had this issue the other day, here's what worked for me. In the top right corner there's a Network drop down. Mine was set to myetherwallet.com and I changed it to etherscan.io and then they were working. I hope this works out for you!