Took out money, but transactions still pending?

I'm very confused right now. I opened up a student account at TCF due to it being close by my dorm, where I'll most likely be at the next three years, and how cheap it seems. So far everything is fine but one thing bothers me. I went to buy Minecraft and checked my account real quick to see if I had enough. I currently do except it says pending transactions despite the money clearly being taken from my account. I did the math right and the correct amount is taken out, so why is it still pending a day later? I did all my business in the afternoon too if that matters.

Just confused as to why it's still pending if the amount was already taken out. I don't have much banking experience so I don't know if this is normal or not.

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