Excellent.
Thanks for that.
The answer is simple.
If you only want the alarm to pop up every Tuesday fortnight then you should only have "Tuesday" ticked as a valid day.
All of the other days should be unticked.
If you tick any of the other days then then the alarm will pop up the next valid day.
The weeks recurrence option can be a little confusing, but also offers a great deal of flexibility.
Example 1. If you want an alarm to pop up every fortnight on Monday and Friday only the alarm settings would be..
Recurrence type - "weeks"
Recurrence value - 2
Valid days - "Mon" and "Fri"
Example 2. If you want an alarm to pop up every weekday the alarm settings would be..
Recurrence type - "weeks"
Recurrence value - 1
Valid days - "Mon" , "Tue, "Wed", "Thu", and "Fri"
Example 3. If you want an alarm to pop up every third Friday the alarm settings would be..
Recurrence type - "weeks"
Recurrence value - 3
Valid days - "Fri"
I hope this clears up any confusion.
Ian
