(Applies to: FusionBB version 1.0 and 2.0+)

This has been an issue with Instant Subscriptions in version 1.0 and has been resolved in version 2.0 .

As a work around for 1.0, try the following:

• From the Admin area: (do all of the steps below. This is also known as Rutto's 'Click it all' tactic ;) )
  • Permissions >> Site check the Can subscribe to topics settings
    
  • Permissions >> Permissions Time Stamp check Update settings
    
  • Database >> Re-sync Data >> Permission Matrix

• Save your changes.

If you have tried the above-mentioned recommendations, but the instant emails are still not going out as expected:

• There is one specific cron script for subscribed topics (This script sends the emails out.) Make sure that you have this script added to the management area.
  • To add this cron script, go to:

Admin CP >> Cron Scheduler >> Add Cron Task

• Once there, fill in the information such as the name you want for your cron script, the settings for when you want the cron to run, and whether you want a log file or not.

• Under the Script to run: setting, click the drop-down menu and choose the topic_subscriptions.php option. Then click Proceed.

• Your newly-added cron will begin running as scheduled.

(Thanks to Geffro for posing the question and Rutto & JoshPet for their answers! Thanks also to Ted_G and Dave for the info about the cron script addition. )