I did some transaction yesterday and it went i set my gwei at 21 which is slow found your issue strange, try to send it again with 30 gwei and allow the gas price to set itself.
It is certainly a very strange issue I must say and there is no way his transaction would have stalled without him doing something wrong. This would be hard to tell since he certainly did not share many details anyway and all he told us was that he made a transaction. At this stage, I really would not expect so much congestion of the network and I made a token transaction yesterday which was very fast. Sharing his transaction details will suffice and help us know what could have actually occurred to have experienced that.
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?
The only reason you will make a transaction and it did not go through is either you gas was too low to allow the transaction go through which in most cases will be reversed in the long run anyway or if there is a mix up on your part somewhere. It would be hard to tell, unless you share with us your transaction hash to really see what exactly is going on with your transaction before knowing what to even suggest appropriately.