You are no doubt linking your remotes like this:
OS --> crypt --> chunker --> cloudremote
that means the encrypting is happening first, then files get chunked (this is why they share names and have extensions).
You want
OS --> chunker --> crypt --> cloudremote
Go check your config file and look at what is says in:
remote =
the chunker should point to the name of your crypt
the crypt should point to the name of your cloudremote
questions?
If confused, post your config and I will fix it for you (but make sure to redact any senstive nifo, like clientID, clientsecret, token and crypt-keys)