Hi,
Thank you for all the details it helps a lot!
I have logged in to check, the issue was caused by a minor misconfiguration issue. The redirection method was set to POST, which is not recommended, as it highly depends on the browsers. I have changed it to the default GET as well as adjusted the results per results page to 12: https://i.imgur.com/5mOodhu.png
This resolved both of the issues.
