Notifications are broken

The app itself works great for Exchange. The notifications are inconsistent, though. Every other app that I have installed which I like having notifications from, notifies me promptly. For example, BBC News or NPR. PROMPT notifications. Mail+ seems to take a "meh, whenever" approach; sometimes you get prompt responses, sometimes you wait days. One workaround is to bring Mail+ to the forefront, which seems to unclog it, at least for the moment. Then youre back to "I wonder when itll notify me next" mode. Their support has been trying to work through this for at least the past 6 weeks, but all they do is avoid direct questions and find something else to blame it on. At least thats what the last few interactions have been like. Ive since switched to using another app for Exchange email (weeks ago) and its working great, including notifications.

Woobiedoobs about Mail+ for Outlook, v3.6.6