Is there a problem in ethereum because all of the transaction is very slow. It almost take 2-3 hours before receiving the sent tokens. What is the cause of this issue? is this related to the dump price of eth
This is not a new thing actually, the problem is ongoing for several days. There is a pet game called cryptokittens where people buy and sell different cat stickers for crazy money. It blocked the ethereum blockchain.
2-3 hours is perfect if you receive your tokens. Use gwei around 80-120 and they go faster.