Hi @rogerwilson.
It looks like your txn went through fine. I don't think the 'B' vs 'b' matters. If you search the account on EtherScan https://etherscan.io/address/0x8476e3ddf311da3e47b76d99f624635c1db8708b either way it takes you to the same account.

My guess is that you are alright. One was or another they know you have contributed.

I actually missed out on Jsnip4's sale by 1 min and spent alot on gas trying over and over not realizing it was full.

When adding a coin in the etherwallet did you try using the contract number from both sales?

1. 0x8476E3DDf311Da3e47B76D99f624635c1dB8708b
2. 0xe3818504c1B32bF1557b16C238B2E01Fd3149C17

The second one was the sale/contract address for the full sale this weekend. It's worth a try. Good luck and thank you for your service in Iraq. I wish you the best. God bless...