I was attempting to purchase the free Roblox bundles such as Cindy or Serena and after hitting purchase, it threw the attached error Could not purchase item, given reason: “Invalid Parameter (InvalidArguments)”.
This is occurring on a desktop Chrome browser, between separate accounts. I noticed that purchasing free bundles worked on mobile Chrome browser, so this appears to be a desktop issue.
I cannot reproduce this issue on my side.
Could you please clear the browser data and try again?
If the issue still occurs, could you please disable the chrome extensions and then try to purchase?