Help Calendar ?

[sargan]

Had S1 & S2, now got myself an S4.
Think I have messed up Calendar, previously used Touchdown sync, but not using it on this phone.
I installed 'S planner' and it gives views & functionality needed.

The problem is it has syncd with all my Facebook contacts, so have hundreds of birthdays imported.
How can I clear these ... they wont delete.
I thought a workaround would be to use another Calendar app .. tried Goggle Calendar ....but it has copied all the entries.

Under device general settings > accounts it did have "Sync Apps with Facebook" enabled which I assume is the cause ...
I have set to to 'sync disabled'
Still won't allow me to delete any of the Facebook 'birthday' reminders it has filled my calendar with.

Is there a way to reset (empty) the calendar ?

 

[Rukbat]

Application manager. Clear data on the calendar (whichever one you're using now).

Then turn off "sync apps with facebook" and turn syncing for the calendar back on.

 

[Greenfly]

I have a Samsung S4. Following a recent upgrade, I find that S Planner is far less user-friendly. For example, it seems to have forgotten some of my preferences and is unwilling to re-learn them, e.g. if I wanted to enter an event which regularly, but randomly, started at 20:15, as soon as I typed '20', it would bring up a ':' prompt and then '15'. If the event was labelled 'LPC', it would remember that and suggest it as the primary option. How can I get S Planner to remember my preferences again?
(I am inexperienced in this forum - if I've come to the wrong place, pls would you re-direct me? Thanks)