This error means your Bitvavo API key is not active yet. When you create an API key on Bitvavo, you receive a confirmation email. Until you click the confirmation link in that email, the API key won't work and Cryptohopper can't connect to your Bitvavo account.
Example of the error:
Solution
Check your email inbox for a confirmation email from Bitvavo.
If you can't find it, check your spam or junk folder.
Click the confirmation link in the email.
Go back to Cryptohopper and reconnect your Bitvavo exchange.
If you can't locate the confirmation email at all, create a new API key on Bitvavo. This will trigger a new confirmation email. For step-by-step instructions on creating Bitvavo API keys, refer to our full guide here.
Verify the fix
After confirming and reconnecting, check your bot's output log to confirm the error no longer appears.