From what I have seen when your NEO has been sent they often do not show up unless you select the 'Rebuild index' option in your wallet. At least that is what worked for two other NEO/Antshares ICO investors.

-------------------------------------------------------------------


I personally do not see why that would be a problem. I think the only requirement for participation in any ICO is to make a payment to a specific wallet address (belonging to Red Pulse in this case) and you probably have to provide some personal details. Making that payment from your exchange address should be about just as easy as doing it from your wallet, so you should be fine. Just keep in mind that Bittrex has outgoing transfer fees, so in case you decide to transfer from Bittrex you have to add those fees to the total as otherwise less NEO will arrive at the Red Pulse wallet. At the moment Bittrex charges 0.1 NEO for sending them to another wallet, whilst Binance charges no transfer fees or transaction fees till at least the 24th of August.

Correction: I just noticed that Bittrex states the following when withdrawing funds: "Do not withdrawal directly to a crowdfund or ICO. We will not credit your account with tokens from that sale." So it appears that using funds directly from an exchange for an ICO might not necessarily work. This might possibly be a thing specific to Bittrex as I do not notice Binance mentioning the same when withdrawing funds, but you might want to be safe rather than sorry. In any case holding NEO in your own wallet will always generate GAS (which is worth quite a lot at the moment).