After you file

I applied for the refund advance loan on 1/31 9:57 pm and it was accepted by irs 2/1 at 12:15am. I had the refund loan in my credit karma account by 4am when I woke up. Said that to let people know it I isn’t a scam or anything. From my understanding the loan isn’t coming from credit karma it’s coming from some First Century bank. But since then I’ve been trying to link my other bank to my Credit Karma account to transfer some funds and I can’t. I have been able to use a digital card CK gave me. But upon reading reviews for CK account I’m not sure this was a good idea.