Hi!
Stephanie appears to be in charge of maintaining this package:
The package we’re asking about in this thread is in the on-board QNAP store:
As I posted, this latter app catalog is the on-board catalog for QNAP and according to QNAP support the maintenance of THIS package falls to Mattermost, Inc. as they were the original submitter.
Next time, please read the message you’re replying to thoroughly before sending a rude reply with the wrong answer.