I have no idea why they are raising money. You need to sign a NDA (non-disclosure agreement) if you want to view the "pitch" on the BTTF platform. It has been speculated Kraken was using Crypto Capital, the same payment processor that Bitfinex entrusted with $850 million, and is unable to access, but I have no idea if this is true or not.
Wow, that never even occurred to me. It sounds plausible. Kraken began their fundraising push around December last year, several months after those funds were apparently seized.
Kraken will almost certainly raise their fundraising goal based on the way things are looking.
If they are trying to plug a hole caused by crypto Capital, they will be able to do so, assuming the hole is only the $10 million they are trying to raise. Bitfinex was able to raise ~100x as much money as kraken is trying to raise.