I ran into errors with the Discord Power-up. I completely removed and de-authorized it from both Trello and Discord and attempted to re-add and re-authorize. However it seems to retain previous data (notifiers), preventing me from selecting a server & channel despite clicking the 'delete' during the power-up disable & removal process. How can I completely reset and remove notifiers in the Discord Power-up? (I have reached out to their support but have not heard back in over a week.) I only need 1 working notifier.