Based on a number of lawyers (we've gone deep on this over the past several years), I'm confident this is resolved through the combination of our terms and privacy policy - the EU/Swiss privacy shield stipulations, which drove the privacy policy encompasses the specific data there that's shared (check out the section entitled "Collection", which is then what's referenced in the shared section). These are common information to engage in internet commerce like email, billing info, etc. This is actually specifically why we had language in our Terms to encompass the actual financial data. The ironic part of all this is we repeatedly told our legal folks we needed to simplify, simplify, simplify.
All that being said - you clearly came to the page and thought the worst based on the language, so I guess it doesn't really matter if we're legally doing the right thing, we need to make sure you (and other folks who reach us) are interpreting and seeing what we're doing as intended.
Give me/us a little bit of time to figure out how to make this instantly obvious. As I mentioned, we're in the midst of clearing up our house based on GDPR requirements, so it's a good time to revisit. Really appreciate the feedback - only way we get better. :)