Changing email does not update when buying Plutonium

Summary

If you sign up with an email, and then change it to something else in the Security tab afterwards, it seems like when you try and purchase Plutonium the stripe checkout shows the old email and the receipt gets sent to the old email with no options in the UI to change it to the new email, could be an issue if people lose access to old email accounts and need to access their receipts. Screenshot 1 shows changed email address in the fluxer web ui (new email), screenshot 2 shows email address previewed in Stripe checkout (old email), screenshot 3 shows receipt being received on old email address (old email) image image image

Steps to reproduce

1. Change and verify Email Address
2. Purchase Fluxer Plutonium

Email listed in stripe checkout is old address and receipt after purchasing goes to old address

Environment (optional)

stable (cb5712f), Firefox 147.0, Linux (x64)