You can obtain free community support for example through stackoverflow, or also through the Symfony2 mailing list.
If you think you found a bug, please create a ticket in the bug tracker.
If you take code quality seriously, try out the new continuous inspection service.
PayPal Express Checkout plugin for JMSPaymentCoreBundle
Payment processing in Symfony projects using PayPal Express Checkout. Implemented as a plugin for JMSPaymentCoreBundle.