Hello @Jessie99, and welcome to the community! The first thing to try would be to make sure that you have a working internet connection. If this fails to solve your issue, then make that your account settings are correct and, if necessary, update them as needed. I hope this helps you, and have a wonderful day!
That’s strange! What platform are you playing on (Android, IOS, Facebook or King.com)? Perhaps there is an issue with the Merchant, and not the game. Try checking the status of these merchants to see if there is an issue.