Hi drag,
It looks you recently earned a promotion to Pro, congratulations for that!
When you first entered the March 18-Hole Unlimited Play you were competing in the Amateur Tier. For the duration of that tournament you'll remain in the Amateur Tier and will need to equip non-Pro clubs to play. You'll be able to use your new Pro-Tier clubs for any tournaments that you have entered since turning Pro and also during any non-tournament play.