Where an how is user data stored? Do you use cloud providers/SaaS and in which jurisdiction? Considering legal requests for user data are being served, location/jurisdiction for both CipherWill and its servers are important and I don't seem to find this mentioned.
Aside, but I don't think I'm alone in considering this a non-starter combined with the whole stack including the client being closed-source.
Fresh advertising but still needs way more transparency (and a round of eyes on your ToS and Privacy Policy) to not look like a honeypot.