Fair enough. I was thinking using the original message received by others as the template to recreate it in terms of format.
The Feature Assistant Extension is a volunteer-built add-on for Firefox and Chrome that provided a number of features that were missing from classic Scoutbook. Most if not all of them are ultimately going to be adopted in some form in the “final” SB+, but for now, features still fully in classic SB still have access to the bulk of the extension’s tools. There’s an actual explanation of the available features here:
https://discussions.scouting.org/t/feature-assistant-what-is-it/98647
It’s good to know that the senders are all scouters, so that shouldn’t in-and-of-itself be an issue. The sending method seems to be the vanilla classic SB interface, so it doesn’t immediately sound like the Feature Assistant is in play.
I don’t know if Donovan or one of the other SUAC has any other ideas for what to look at for additional troubleshooting. It does still seem like a message-specific issue, to be honest, because it’s both intermittent and the same users have successfully sent to you through the same interface.
