[Koha] Can't tick "item due" box in Patron messaging preferences

[Sonia P.]

Hello everyone

(not sure you ever received my previous message, as I received a delivery failure email...)

I just realised one thing...  "item due" in the default messaging preferences of a patron category is 
NOT about overdue items, is it?  I didn't realise it was two different 
things.  So there is nothing to do in the messaging preferences to 
enable overdue items notices... ?  If I run a SQL query on the database, I can see that some people have a "1" set for overduenoticerequired, which is good, but then I really don't know why they don't receive it...

Cheers,

Sonia.