From now on, the Facebook Messenger message sending function will be removed from WISE-523x/224x and PMC-523x/PMC-224x/PMD due to updates Facebook is making to its Messenger platform policies.
We understand that this may be a disappointment, and we look forward to working with Facebook in the future to bring new, sustainable services to WISE/PMC in ways that empower everyone to benefit from and control their data.
For alternatives, take a look at other message notification functions on WISE/PMC.
We appreciate your understanding.