The days of stalling payments to frustrate players into reversing them are dwindling. Most online casinos do not want a bad reputation for such things as it can be harmful to the future of their business. Not having a fully verified account is the most common cause of delayed payment in 2021. Modern licencing requires Anti Money Laundering (AML) checks and Know Your Customer (KYC) account verification at certain thresholds and online casinos are required to carry out such checks under licencing requirements.