I've been following along the 'Get Started' guide on the Stellar Developer's site and practicing with the Java code that is provided in the 'Transactions' chapter.
When executing the sample code to send a payment over the Test Network, I get, after about a minute, a response in the console back that the transaction of the PaymentOperation was a success. However, when checking the destination account that has received the payment (using a tool like stellarchain.io (switching to TestNet)), I am able to find the account itself, but I don't see the payment transaction that I executed. In my view, it should have been visible there. I guess I must be missing or misunderstand something, but I don't know what it is.