TD Ameritrade - What does this warning mean?

Opening transactions for this security are not accepted.; You do not have enough available cash/buying power for this order due to recently deposited funds still on hold.; Only closing orders are accepted on foreign ETFs.

Trying to buy BITCF. I have $83 in stock buying power, tried buying just 1 stock for $1.90 but I keep getting this warning.

Submitted December 19, 2017 at 11:44AM by SincerePenguin http://ift.tt/2oKIZPU