After registering your account, you'll have limited access to solo only features (e.g. Vault file storage, passwords, and notes) until your public key is signed by Cyph. This process allows for our automatic ID verification process, which ensures that you're not just having an encrypted conversation, but also that it's with the right person. This protects Cyph users from Man-In-The-Middle and impersonation attacks.
The signing process should take no more than 48 hours to complete. As batches of accounts are generally processed multiple times per day, it typically will occur within 12-24 hours, but often happens faster.
Again, while you're restricted from interacting with other users until you're verified, you're still able to set up your profile and start using the Vault.