After you file

I used TT yesterday and my return was accepted by the IRS shortly after filing (within an hr). I was approved for the Credit Karma advance, however, as of today, my advance is not available yet.  AFter contacting both CK and TT this morning, I was told that it could take up to 48 hours for the loan to be available.......contrary to what the advertisements say "1to2 hours after IRS acceptance"