OG Gaian

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Hi, I bought $30 worth of Gaia cash this morning and have spent every penny, but I've only managed to collect up to the 2500 GC tier.
Is there a reason this is happening?
Did I miss some important piece of information that restricts how you spend your cash?
Sorry, just curious considering the event is going to end soon and if I can, I'd like to collect before time runs out.

EDIT:
Also, despite spending all my cash, the meter only says I'm at 2974/3000.