Remote IP is not authorized - apiUseWhitelist false not working?

[JMDirksen]

Issue

My API key pair has been generated with the 'Whitelisted IP' checkbox off.
I have no IP's in the Whitelisted IP's list.

I am unable to connect to the API.
I'm getting error: Remote IP is not authorized for this request; called from IP xxx.xxx.xxx.xxx

When I would add my remote IP to the whitelist it works as expected (The then generated Access tokens have the 'Whitelisted IP' propertie on Yes).

Running:
./tipctl.phar setup -n --apiUseWhitelist=false --loginName=myusername --apiPrivateKey="$(cat private.key)" -vvv

Result:

Box Requirements Checker
========================

> Using PHP 8.2.12
> PHP is using the following php.ini file:
  /usr/local/etc/php/php.ini

> Checking Box requirements:
  ✔ The application requires the version "^7.2.5|^8.0" or greater.
  ✔ The application requires the extension "json".
  ✔ The package "guzzlehttp/guzzle" requires the extension "json".
  ✔ The package "transip/transip-api-php" requires the extension "json".
  ✔ The package "transip/transip-api-php" requires the extension "openssl".
  
                                                                                
 [OK] Your system is ready to run the application.                              
                                                                                

Checking API connection to endpoint 'https://api.transip.nl/v6'

API connection failed!
Remote IP is not authorized for this request; called from IP xxx.xxx.xxx.xxx

So I'm not sure, but or there is something wrong with the API itself, not letting me use not-whitelisted IP's.
Or tipctl is not properly telling the API I want to login without whitelisted IP.

Can anybody replicate this issue or can I test something else?

Extra info
I'm building a docker container which should update my IP in DNS when my WAN IP changes (so I really can't use whitelisted IP).
Dockerfile so far:

FROM php:8.2-cli
WORKDIR /root
COPY . .
ADD --chmod=700 https://github.com/transip/tipctl/releases/latest/download/tipctl.phar tipctl.phar
RUN echo 'alias tipctl="/root/tipctl.phar"' >> ~/.bashrc
RUN cp /usr/local/etc/php/php.ini-production /usr/local/etc/php/php.ini
RUN ./tipctl.phar setup -n --apiUseWhitelist=false --loginName=myusername --apiPrivateKey="$(cat private.key)" -vvv

[svenwiltink]

Fixed in 6.33.3. There was a bug in the non-interactive mode